diff --git a/frontend/bindings/voidraft/internal/models/models.ts b/frontend/bindings/voidraft/internal/models/models.ts
index 168179f..98f27ad 100644
--- a/frontend/bindings/voidraft/internal/models/models.ts
+++ b/frontend/bindings/voidraft/internal/models/models.ts
@@ -18,6 +18,11 @@ export class AppConfig {
      */
     "editor": EditorConfig;
 
+    /**
+     * 文档配置
+     */
+    "document": DocumentConfig;
+
     /**
      * 路径配置
      */
@@ -33,6 +38,9 @@ export class AppConfig {
         if (!("editor" in $$source)) {
             this["editor"] = (new EditorConfig());
         }
+        if (!("document" in $$source)) {
+            this["document"] = (new DocumentConfig());
+        }
         if (!("paths" in $$source)) {
             this["paths"] = (new PathsConfig());
         }
@@ -50,15 +58,19 @@ export class AppConfig {
         const $$createField0_0 = $$createType0;
         const $$createField1_0 = $$createType1;
         const $$createField2_0 = $$createType2;
+        const $$createField3_0 = $$createType3;
         let $$parsedSource = typeof $$source === 'string' ? JSON.parse($$source) : $$source;
         if ("editor" in $$parsedSource) {
             $$parsedSource["editor"] = $$createField0_0($$parsedSource["editor"]);
         }
+        if ("document" in $$parsedSource) {
+            $$parsedSource["document"] = $$createField1_0($$parsedSource["document"]);
+        }
         if ("paths" in $$parsedSource) {
-            $$parsedSource["paths"] = $$createField1_0($$parsedSource["paths"]);
+            $$parsedSource["paths"] = $$createField2_0($$parsedSource["paths"]);
         }
         if ("metadata" in $$parsedSource) {
-            $$parsedSource["metadata"] = $$createField2_0($$parsedSource["metadata"]);
+            $$parsedSource["metadata"] = $$createField3_0($$parsedSource["metadata"]);
         }
         return new AppConfig($$parsedSource as Partial<AppConfig>);
     }
@@ -99,6 +111,127 @@ export class ConfigMetadata {
     }
 }
 
+/**
+ * Document 表示一个文档
+ */
+export class Document {
+    /**
+     * 元数据
+     */
+    "meta": DocumentMeta;
+
+    /**
+     * 文档内容
+     */
+    "content": string;
+
+    /** Creates a new Document instance. */
+    constructor($$source: Partial<Document> = {}) {
+        if (!("meta" in $$source)) {
+            this["meta"] = (new DocumentMeta());
+        }
+        if (!("content" in $$source)) {
+            this["content"] = "";
+        }
+
+        Object.assign(this, $$source);
+    }
+
+    /**
+     * Creates a new Document instance from a string or object.
+     */
+    static createFrom($$source: any = {}): Document {
+        const $$createField0_0 = $$createType4;
+        let $$parsedSource = typeof $$source === 'string' ? JSON.parse($$source) : $$source;
+        if ("meta" in $$parsedSource) {
+            $$parsedSource["meta"] = $$createField0_0($$parsedSource["meta"]);
+        }
+        return new Document($$parsedSource as Partial<Document>);
+    }
+}
+
+/**
+ * DocumentConfig 定义文档配置
+ */
+export class DocumentConfig {
+    /**
+     * 详细保存选项
+     */
+    "saveOptions": SaveOptions;
+
+    /** Creates a new DocumentConfig instance. */
+    constructor($$source: Partial<DocumentConfig> = {}) {
+        if (!("saveOptions" in $$source)) {
+            this["saveOptions"] = (new SaveOptions());
+        }
+
+        Object.assign(this, $$source);
+    }
+
+    /**
+     * Creates a new DocumentConfig instance from a string or object.
+     */
+    static createFrom($$source: any = {}): DocumentConfig {
+        const $$createField0_0 = $$createType5;
+        let $$parsedSource = typeof $$source === 'string' ? JSON.parse($$source) : $$source;
+        if ("saveOptions" in $$parsedSource) {
+            $$parsedSource["saveOptions"] = $$createField0_0($$parsedSource["saveOptions"]);
+        }
+        return new DocumentConfig($$parsedSource as Partial<DocumentConfig>);
+    }
+}
+
+/**
+ * DocumentMeta 文档元数据
+ */
+export class DocumentMeta {
+    /**
+     * 文档唯一标识
+     */
+    "id": string;
+
+    /**
+     * 文档标题
+     */
+    "title": string;
+
+    /**
+     * 最后更新时间
+     */
+    "lastUpdated": time$0.Time;
+
+    /**
+     * 创建时间
+     */
+    "createdAt": time$0.Time;
+
+    /** Creates a new DocumentMeta instance. */
+    constructor($$source: Partial<DocumentMeta> = {}) {
+        if (!("id" in $$source)) {
+            this["id"] = "";
+        }
+        if (!("title" in $$source)) {
+            this["title"] = "";
+        }
+        if (!("lastUpdated" in $$source)) {
+            this["lastUpdated"] = null;
+        }
+        if (!("createdAt" in $$source)) {
+            this["createdAt"] = null;
+        }
+
+        Object.assign(this, $$source);
+    }
+
+    /**
+     * Creates a new DocumentMeta instance from a string or object.
+     */
+    static createFrom($$source: any = {}): DocumentMeta {
+        let $$parsedSource = typeof $$source === 'string' ? JSON.parse($$source) : $$source;
+        return new DocumentMeta($$parsedSource as Partial<DocumentMeta>);
+    }
+}
+
 /**
  * EditorConfig 定义编辑器配置
  */
@@ -221,6 +354,49 @@ export class PathsConfig {
     }
 }
 
+/**
+ * SaveOptions 保存选项
+ */
+export class SaveOptions {
+    /**
+     * 自动保存延迟（毫秒）- 内容变更后多久自动保存
+     */
+    "autoSaveDelay": number;
+
+    /**
+     * 变更字符阈值，超过此阈值立即触发保存
+     */
+    "changeThreshold": number;
+
+    /**
+     * 最小保存间隔（毫秒）- 两次保存之间的最小时间间隔，避免频繁IO
+     */
+    "minSaveInterval": number;
+
+    /** Creates a new SaveOptions instance. */
+    constructor($$source: Partial<SaveOptions> = {}) {
+        if (!("autoSaveDelay" in $$source)) {
+            this["autoSaveDelay"] = 0;
+        }
+        if (!("changeThreshold" in $$source)) {
+            this["changeThreshold"] = 0;
+        }
+        if (!("minSaveInterval" in $$source)) {
+            this["minSaveInterval"] = 0;
+        }
+
+        Object.assign(this, $$source);
+    }
+
+    /**
+     * Creates a new SaveOptions instance from a string or object.
+     */
+    static createFrom($$source: any = {}): SaveOptions {
+        let $$parsedSource = typeof $$source === 'string' ? JSON.parse($$source) : $$source;
+        return new SaveOptions($$parsedSource as Partial<SaveOptions>);
+    }
+}
+
 /**
  * TabType 定义了制表符类型
  */
@@ -243,5 +419,8 @@ export enum TabType {
 
 // Private type creation functions
 const $$createType0 = EditorConfig.createFrom;
-const $$createType1 = PathsConfig.createFrom;
-const $$createType2 = ConfigMetadata.createFrom;
+const $$createType1 = DocumentConfig.createFrom;
+const $$createType2 = PathsConfig.createFrom;
+const $$createType3 = ConfigMetadata.createFrom;
+const $$createType4 = DocumentMeta.createFrom;
+const $$createType5 = SaveOptions.createFrom;
diff --git a/frontend/bindings/voidraft/internal/services/documentservice.ts b/frontend/bindings/voidraft/internal/services/documentservice.ts
new file mode 100644
index 0000000..30021b7
--- /dev/null
+++ b/frontend/bindings/voidraft/internal/services/documentservice.ts
@@ -0,0 +1,142 @@
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
+// This file is automatically generated. DO NOT EDIT
+
+/**
+ * DocumentService 提供文档管理功能
+ * @module
+ */
+
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-ignore: Unused imports
+import {Call as $Call, Create as $Create} from "@wailsio/runtime";
+
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-ignore: Unused imports
+import * as models$0 from "../models/models.js";
+
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-ignore: Unused imports
+import * as $models from "./models.js";
+
+/**
+ * ForceSave 强制保存当前文档
+ */
+export function ForceSave(): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(2767091023) as any;
+    return $resultPromise;
+}
+
+/**
+ * GetActiveDocument 获取当前活动文档
+ */
+export function GetActiveDocument(): Promise<models$0.Document | null> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(1785823398) as any;
+    let $typingPromise = $resultPromise.then(($result: any) => {
+        return $$createType1($result);
+    }) as any;
+    $typingPromise.cancel = $resultPromise.cancel.bind($resultPromise);
+    return $typingPromise;
+}
+
+/**
+ * GetActiveDocumentContent 获取当前活动文档内容
+ */
+export function GetActiveDocumentContent(): Promise<string> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(922617063) as any;
+    return $resultPromise;
+}
+
+/**
+ * GetDiffInfo 获取两个文本之间的详细差异信息
+ */
+export function GetDiffInfo(oldText: string, newText: string): Promise<$models.DiffResult> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(2490726526, oldText, newText) as any;
+    let $typingPromise = $resultPromise.then(($result: any) => {
+        return $$createType2($result);
+    }) as any;
+    $typingPromise.cancel = $resultPromise.cancel.bind($resultPromise);
+    return $typingPromise;
+}
+
+/**
+ * GetSaveSettings 获取文档保存设置
+ */
+export function GetSaveSettings(): Promise<models$0.DocumentConfig | null> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(4257471801) as any;
+    let $typingPromise = $resultPromise.then(($result: any) => {
+        return $$createType4($result);
+    }) as any;
+    $typingPromise.cancel = $resultPromise.cancel.bind($resultPromise);
+    return $typingPromise;
+}
+
+/**
+ * Initialize 初始化文档服务
+ */
+export function Initialize(): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(3418008221) as any;
+    return $resultPromise;
+}
+
+/**
+ * LoadDefaultDocument 加载默认文档
+ */
+export function LoadDefaultDocument(): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(2343023569) as any;
+    return $resultPromise;
+}
+
+/**
+ * SaveDocumentSync 同步保存文档内容 (用于页面关闭前同步保存)
+ */
+export function SaveDocumentSync(content: string): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(3770207288, content) as any;
+    return $resultPromise;
+}
+
+/**
+ * ServiceShutdown 实现应用程序关闭时的服务关闭逻辑
+ */
+export function ServiceShutdown(): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(638578044) as any;
+    return $resultPromise;
+}
+
+/**
+ * SetSaveCallback 设置保存回调函数
+ */
+export function SetSaveCallback(callback: any): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(675315211, callback) as any;
+    return $resultPromise;
+}
+
+/**
+ * Shutdown 关闭文档服务，确保所有数据保存
+ */
+export function Shutdown(): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(3444504909) as any;
+    return $resultPromise;
+}
+
+/**
+ * UpdateActiveDocumentContent 更新当前活动文档内容
+ */
+export function UpdateActiveDocumentContent(content: string): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(1486276638, content) as any;
+    return $resultPromise;
+}
+
+/**
+ * UpdateSaveSettings 更新文档保存设置
+ */
+export function UpdateSaveSettings(docConfig: models$0.DocumentConfig): Promise<void> & { cancel(): void } {
+    let $resultPromise = $Call.ByID(1245479534, docConfig) as any;
+    return $resultPromise;
+}
+
+// Private type creation functions
+const $$createType0 = models$0.Document.createFrom;
+const $$createType1 = $Create.Nullable($$createType0);
+const $$createType2 = $models.DiffResult.createFrom;
+const $$createType3 = models$0.DocumentConfig.createFrom;
+const $$createType4 = $Create.Nullable($$createType3);
diff --git a/frontend/bindings/voidraft/internal/services/index.ts b/frontend/bindings/voidraft/internal/services/index.ts
index 46882e0..bdd3b58 100644
--- a/frontend/bindings/voidraft/internal/services/index.ts
+++ b/frontend/bindings/voidraft/internal/services/index.ts
@@ -2,6 +2,10 @@
 // This file is automatically generated. DO NOT EDIT
 
 import * as ConfigService from "./configservice.js";
+import * as DocumentService from "./documentservice.js";
 export {
-    ConfigService
+    ConfigService,
+    DocumentService
 };
+
+export * from "./models.js";
diff --git a/frontend/bindings/voidraft/internal/services/models.ts b/frontend/bindings/voidraft/internal/services/models.ts
new file mode 100644
index 0000000..619e014
--- /dev/null
+++ b/frontend/bindings/voidraft/internal/services/models.ts
@@ -0,0 +1,141 @@
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
+// This file is automatically generated. DO NOT EDIT
+
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-ignore: Unused imports
+import {Create as $Create} from "@wailsio/runtime";
+
+/**
+ * DiffResult 包含差异比较的结果信息
+ */
+export class DiffResult {
+    /**
+     * 编辑操作列表
+     */
+    "Edits": Edit[];
+
+    /**
+     * 插入的字符数
+     */
+    "InsertCount": number;
+
+    /**
+     * 删除的字符数
+     */
+    "DeleteCount": number;
+
+    /**
+     * 变更的行数
+     */
+    "ChangedLines": number;
+
+    /**
+     * 总变更字符数（插入+删除）
+     */
+    "TotalChanges": number;
+
+    /**
+     * 变更的token数（如单词、标识符等）
+     */
+    "ChangedTokens": number;
+
+    /** Creates a new DiffResult instance. */
+    constructor($$source: Partial<DiffResult> = {}) {
+        if (!("Edits" in $$source)) {
+            this["Edits"] = [];
+        }
+        if (!("InsertCount" in $$source)) {
+            this["InsertCount"] = 0;
+        }
+        if (!("DeleteCount" in $$source)) {
+            this["DeleteCount"] = 0;
+        }
+        if (!("ChangedLines" in $$source)) {
+            this["ChangedLines"] = 0;
+        }
+        if (!("TotalChanges" in $$source)) {
+            this["TotalChanges"] = 0;
+        }
+        if (!("ChangedTokens" in $$source)) {
+            this["ChangedTokens"] = 0;
+        }
+
+        Object.assign(this, $$source);
+    }
+
+    /**
+     * Creates a new DiffResult instance from a string or object.
+     */
+    static createFrom($$source: any = {}): DiffResult {
+        const $$createField0_0 = $$createType1;
+        let $$parsedSource = typeof $$source === 'string' ? JSON.parse($$source) : $$source;
+        if ("Edits" in $$parsedSource) {
+            $$parsedSource["Edits"] = $$createField0_0($$parsedSource["Edits"]);
+        }
+        return new DiffResult($$parsedSource as Partial<DiffResult>);
+    }
+}
+
+/**
+ * Edit 表示单个编辑操作
+ */
+export class Edit {
+    /**
+     * 操作类型
+     */
+    "Type": EditType;
+
+    /**
+     * 操作内容
+     */
+    "Content": string;
+
+    /** Creates a new Edit instance. */
+    constructor($$source: Partial<Edit> = {}) {
+        if (!("Type" in $$source)) {
+            this["Type"] = (0 as EditType);
+        }
+        if (!("Content" in $$source)) {
+            this["Content"] = "";
+        }
+
+        Object.assign(this, $$source);
+    }
+
+    /**
+     * Creates a new Edit instance from a string or object.
+     */
+    static createFrom($$source: any = {}): Edit {
+        let $$parsedSource = typeof $$source === 'string' ? JSON.parse($$source) : $$source;
+        return new Edit($$parsedSource as Partial<Edit>);
+    }
+}
+
+/**
+ * Edit 表示编辑操作类型
+ */
+export enum EditType {
+    /**
+     * The Go zero value for the underlying type of the enum.
+     */
+    $zero = 0,
+
+    /**
+     * EditInsert 插入操作
+     */
+    EditInsert = 0,
+
+    /**
+     * EditDelete 删除操作
+     */
+    EditDelete = 1,
+
+    /**
+     * EditEqual 相等部分
+     */
+    EditEqual = 2,
+};
+
+// Private type creation functions
+const $$createType0 = Edit.createFrom;
+const $$createType1 = $Create.Array($$createType0);
diff --git a/frontend/src/editor/Editor.vue b/frontend/src/editor/Editor.vue
index ff6e4c0..ee68570 100644
--- a/frontend/src/editor/Editor.vue
+++ b/frontend/src/editor/Editor.vue
@@ -4,30 +4,46 @@ import {EditorState, Extension} from '@codemirror/state';
 import {EditorView} from '@codemirror/view';
 import {useEditorStore} from '@/stores/editorStore';
 import {useConfigStore} from '@/stores/configStore';
+import {useDocumentStore} from '@/stores/documentStore';
+import {useLogStore} from '@/stores/logStore';
 import {createBasicSetup} from './extensions/basicSetup';
 import {
   createStatsUpdateExtension,
   createWheelZoomHandler,
   getTabExtensions,
   updateStats,
-  updateTabConfig
+  updateTabConfig,
+  createAutoSavePlugin,
+  createSaveShortcutPlugin,
 } from './extensions';
+import { useI18n } from 'vue-i18n';
+import { DocumentService } from '@/../bindings/voidraft/internal/services';
 
 const editorStore = useEditorStore();
 const configStore = useConfigStore();
+const documentStore = useDocumentStore();
+const logStore = useLogStore();
+const { t } = useI18n();
 
 const props = defineProps({
   initialDoc: {
     type: String,
-    default: '// 在此处编写文本...'
+    default: ''
   }
 });
 
 const editorElement = ref<HTMLElement | null>(null);
+const editorCreated = ref(false);
+let isDestroying = false;
 
 // 创建编辑器
-const createEditor = () => {
-  if (!editorElement.value) return;
+const createEditor = async () => {
+  if (!editorElement.value || editorCreated.value) return;
+  editorCreated.value = true;
+
+  // 加载文档内容
+  await documentStore.initialize();
+  const docContent = documentStore.documentContent || props.initialDoc;
 
   // 获取基本扩展
   const basicExtensions = createBasicSetup();
@@ -44,16 +60,35 @@ const createEditor = () => {
       editorStore.updateDocumentStats
   );
 
+  // 创建保存快捷键插件
+  const saveShortcutPlugin = createSaveShortcutPlugin(() => {
+    if (editorStore.editorView) {
+      handleManualSave();
+    }
+  });
+
+  // 创建自动保存插件
+  const autoSavePlugin = createAutoSavePlugin({
+    debounceDelay: 300, // 300毫秒的输入防抖
+    onSave: (success) => {
+      if (success) {
+        documentStore.lastSaved = new Date();
+      }
+    }
+  });
+
   // 组合所有扩展
   const extensions: Extension[] = [
     ...basicExtensions,
     ...tabExtensions,
-    statsExtension
+    statsExtension,
+    saveShortcutPlugin,
+    autoSavePlugin
   ];
 
   // 创建编辑器状态
   const state = EditorState.create({
-    doc: props.initialDoc,
+    doc: docContent,
     extensions
   });
 
@@ -71,6 +106,7 @@ const createEditor = () => {
 
   // 立即更新统计信息，不等待用户交互
   updateStats(view, editorStore.updateDocumentStats);
+
 };
 
 // 创建滚轮事件处理器
@@ -79,6 +115,20 @@ const handleWheel = createWheelZoomHandler(
     configStore.decreaseFontSize
 );
 
+// 手动保存文档
+const handleManualSave = async () => {
+  if (!editorStore.editorView || isDestroying) return;
+  
+  const view = editorStore.editorView as EditorView;
+  const content = view.state.doc.toString();
+
+  // 使用文档存储的强制保存方法
+  const success = await documentStore.forceSaveDocument(content);
+  if (success) {
+    logStore.info(t('document.manualSaveSuccess'));
+  }
+};
+
 // 重新配置编辑器（仅在必要时）
 const reconfigureTabSettings = () => {
   if (!editorStore.editorView) return;
@@ -118,12 +168,14 @@ onMounted(() => {
 });
 
 onBeforeUnmount(() => {
+  isDestroying = true;
+  
   // 移除滚轮事件监听
   if (editorElement.value) {
     editorElement.value.removeEventListener('wheel', handleWheel);
   }
 
-  // 销毁编辑器
+  // 直接销毁编辑器
   if (editorStore.editorView) {
     editorStore.editorView.destroy();
     editorStore.setEditorView(null);
diff --git a/frontend/src/editor/extensions/autoSaveExtension.ts b/frontend/src/editor/extensions/autoSaveExtension.ts
new file mode 100644
index 0000000..d51c30b
--- /dev/null
+++ b/frontend/src/editor/extensions/autoSaveExtension.ts
@@ -0,0 +1,117 @@
+import { EditorView, ViewPlugin, ViewUpdate } from '@codemirror/view';
+import { DocumentService } from '@/../bindings/voidraft/internal/services';
+import { useDebounceFn } from '@vueuse/core';
+
+// 定义自动保存配置选项
+export interface AutoSaveOptions {
+  // 保存回调
+  onSave?: (success: boolean) => void;
+  // 内容变更延迟传递（毫秒）- 输入时不会立即发送，有一个小延迟，避免频繁调用后端
+  debounceDelay?: number;
+}
+
+/**
+ * 创建自动保存插件
+ * @param options 配置选项
+ * @returns EditorView.Plugin
+ */
+export function createAutoSavePlugin(options: AutoSaveOptions = {}) {
+  const { 
+    onSave = () => {},
+    debounceDelay = 1000  // 默认1000ms延迟，原为300ms
+  } = options;
+
+  return ViewPlugin.fromClass(
+    class {
+      private isActive: boolean = true;
+      private isSaving: boolean = false;
+      private contentUpdateFn: (view: EditorView) => void;
+
+      constructor(private view: EditorView) {
+        // 创建内容更新函数
+        this.contentUpdateFn = this.createDebouncedUpdateFn(debounceDelay);
+      }
+
+      /**
+       * 创建防抖的内容更新函数
+       */
+      private createDebouncedUpdateFn(delay: number): (view: EditorView) => void {
+        // 使用VueUse的防抖函数创建一个新函数
+        return useDebounceFn(async (view: EditorView) => {
+          // 如果插件已不活跃或正在保存中，不发送
+          if (!this.isActive || this.isSaving) return;
+          
+          this.isSaving = true;
+          const content = view.state.doc.toString();
+          
+          try {
+            await DocumentService.UpdateActiveDocumentContent(content);
+            onSave(true);
+          } catch (err) {
+            console.error('Failed to update document content:', err);
+            onSave(false);
+          } finally {
+            this.isSaving = false;
+          }
+        }, delay);
+      }
+
+      update(update: ViewUpdate) {
+        // 如果内容没有变化，直接返回
+        if (!update.docChanged) return;
+
+        // 调用防抖函数
+        this.contentUpdateFn(this.view);
+      }
+
+      destroy() {
+        // 标记插件不再活跃
+        this.isActive = false;
+        
+        // 直接发送最终内容
+        const content = this.view.state.doc.toString();
+        DocumentService.UpdateActiveDocumentContent(content)
+          .then(() => console.log('Successfully sent final content on destroy'))
+          .catch(err => console.error('Failed to send content on destroy:', err));
+      }
+    }
+  );
+}
+
+/**
+ * 创建处理保存快捷键的插件
+ * @param onSave 保存回调
+ * @returns EditorView.Plugin
+ */
+export function createSaveShortcutPlugin(onSave: () => void) {
+  return EditorView.domEventHandlers({
+    keydown: (event) => {
+      // Ctrl+S / Cmd+S
+      if ((event.ctrlKey || event.metaKey) && event.key === 's') {
+        event.preventDefault();
+        onSave();
+        return true;
+      }
+      return false;
+    }
+  });
+}
+
+/**
+ * 手动触发文档保存
+ * @param view 编辑器视图
+ * @returns Promise<boolean>
+ */
+export async function saveDocument(view: EditorView): Promise<boolean> {
+  try {
+    const content = view.state.doc.toString();
+    // 更新内容
+    await DocumentService.UpdateActiveDocumentContent(content);
+    // 强制保存到磁盘
+    await DocumentService.ForceSave();
+    return true;
+  } catch (err) {
+    console.error('Failed to save document:', err);
+    return false;
+  }
+} 
\ No newline at end of file
diff --git a/frontend/src/editor/extensions/index.ts b/frontend/src/editor/extensions/index.ts
index 233c8ce..22f2480 100644
--- a/frontend/src/editor/extensions/index.ts
+++ b/frontend/src/editor/extensions/index.ts
@@ -1,4 +1,5 @@
 // 统一导出所有扩展
 export * from './tabExtension';
 export * from './wheelZoomExtension';
-export * from './statsExtension'; 
\ No newline at end of file
+export * from './statsExtension'; 
+export * from './autoSaveExtension'; 
\ No newline at end of file
diff --git a/frontend/src/i18n/locales/en-US.ts b/frontend/src/i18n/locales/en-US.ts
index f5497a0..73472ce 100644
--- a/frontend/src/i18n/locales/en-US.ts
+++ b/frontend/src/i18n/locales/en-US.ts
@@ -31,5 +31,17 @@ export default {
   languages: {
     'zh-CN': '简体中文',
     'en-US': 'English'
+  },
+  document: {
+    loadSuccess: 'Document loaded successfully',
+    loadFailed: 'Failed to load document',
+    saveSuccess: 'Document saved successfully',
+    saveFailed: 'Failed to save document',
+    manualSaveSuccess: 'Manually saved successfully',
+    settings: {
+      loadFailed: 'Failed to load save settings',
+      saveSuccess: 'Save settings updated',
+      saveFailed: 'Failed to update save settings'
+    }
   }
 }; 
\ No newline at end of file
diff --git a/frontend/src/i18n/locales/zh-CN.ts b/frontend/src/i18n/locales/zh-CN.ts
index b4341d3..bd84d07 100644
--- a/frontend/src/i18n/locales/zh-CN.ts
+++ b/frontend/src/i18n/locales/zh-CN.ts
@@ -31,5 +31,17 @@ export default {
   languages: {
     'zh-CN': '简体中文',
     'en-US': 'English'
+  },
+  document: {
+    loadSuccess: '文档加载成功',
+    loadFailed: '文档加载失败',
+    saveSuccess: '文档保存成功',
+    saveFailed: '文档保存失败',
+    manualSaveSuccess: '手动保存成功',
+    settings: {
+      loadFailed: '加载保存设置失败',
+      saveSuccess: '保存设置已更新',
+      saveFailed: '保存设置更新失败'
+    }
   }
 }; 
\ No newline at end of file
diff --git a/frontend/src/stores/documentStore.ts b/frontend/src/stores/documentStore.ts
new file mode 100644
index 0000000..048783c
--- /dev/null
+++ b/frontend/src/stores/documentStore.ts
@@ -0,0 +1,123 @@
+import {defineStore} from 'pinia';
+import {computed, ref} from 'vue';
+import {DocumentService} from '@/../bindings/voidraft/internal/services';
+import {Document} from '@/../bindings/voidraft/internal/models/models';
+import {useLogStore} from './logStore';
+import {useI18n} from 'vue-i18n';
+
+export const useDocumentStore = defineStore('document', () => {
+  const logStore = useLogStore();
+  const { t } = useI18n();
+
+  // 状态
+  const activeDocument = ref<Document | null>(null);
+  const isLoading = ref(false);
+  const isSaving = ref(false);
+  const lastSaved = ref<Date | null>(null);
+
+  // 计算属性
+  const documentContent = computed(() => activeDocument.value?.content || '');
+  const documentTitle = computed(() => activeDocument.value?.meta?.title || '');
+  const hasActiveDocument = computed(() => !!activeDocument.value);
+  const isSaveInProgress = computed(() => isSaving.value);
+  const lastSavedTime = computed(() => lastSaved.value);
+
+  // 加载文档
+  async function loadDocument() {
+    if (isLoading.value) return;
+    
+    isLoading.value = true;
+    try {
+        activeDocument.value = await DocumentService.GetActiveDocument();
+      logStore.info(t('document.loadSuccess'));
+    } catch (err) {
+      console.error('Failed to load document:', err);
+      logStore.error(t('document.loadFailed'));
+      activeDocument.value = null;
+    } finally {
+      isLoading.value = false;
+    }
+  }
+
+  // 保存文档
+  async function saveDocument(content: string): Promise<boolean> {
+    if (isSaving.value) return false;
+    
+    isSaving.value = true;
+    try {
+      await DocumentService.UpdateActiveDocumentContent(content);
+      lastSaved.value = new Date();
+      
+      // 如果我们有活动文档，更新本地副本
+      if (activeDocument.value) {
+        activeDocument.value.content = content;
+        activeDocument.value.meta.lastUpdated = lastSaved.value;
+      }
+      
+      logStore.info(t('document.saveSuccess'));
+      return true;
+    } catch (err) {
+      console.error('Failed to save document:', err);
+      logStore.error(t('document.saveFailed'));
+      return false;
+    } finally {
+      isSaving.value = false;
+    }
+  }
+
+  // 强制保存文档到磁盘
+  async function forceSaveDocument(content: string): Promise<boolean> {
+    if (isSaving.value) return false;
+    
+    isSaving.value = true;
+    try {
+      // 先更新内容
+      await DocumentService.UpdateActiveDocumentContent(content);
+      // 然后强制保存
+      await DocumentService.ForceSave();
+      
+      lastSaved.value = new Date();
+      
+      // 如果我们有活动文档，更新本地副本
+      if (activeDocument.value) {
+        activeDocument.value.content = content;
+        activeDocument.value.meta.lastUpdated = lastSaved.value;
+      }
+      
+      logStore.info(t('document.manualSaveSuccess'));
+      return true;
+    } catch (err) {
+      console.error('Failed to force save document:', err);
+      logStore.error(t('document.saveFailed'));
+      return false;
+    } finally {
+      isSaving.value = false;
+    }
+  }
+
+  // 初始化
+  async function initialize() {
+    await loadDocument();
+  }
+
+  return {
+    // 状态
+    activeDocument,
+    isLoading,
+    isSaving,
+    lastSaved,
+    
+    // 计算属性
+    documentContent,
+    documentTitle,
+    hasActiveDocument,
+    isSaveInProgress,
+    lastSavedTime,
+    
+    // 方法
+    loadDocument,
+    saveDocument,
+    forceSaveDocument,
+    initialize
+  };
+}); 
\ No newline at end of file
diff --git a/internal/models/config.go b/internal/models/config.go
index bd395a0..cdaed00 100644
--- a/internal/models/config.go
+++ b/internal/models/config.go
@@ -16,6 +16,21 @@ const (
 	TabTypeTab TabType = "tab"
 )
 
+// SaveOptions 保存选项
+type SaveOptions struct {
+	// 自动保存延迟（毫秒）- 内容变更后多久自动保存
+	AutoSaveDelay int `json:"autoSaveDelay"`
+	// 变更字符阈值，超过此阈值立即触发保存
+	ChangeThreshold int `json:"changeThreshold"`
+	// 最小保存间隔（毫秒）- 两次保存之间的最小时间间隔，避免频繁IO
+	MinSaveInterval int `json:"minSaveInterval"`
+}
+
+// DocumentConfig 定义文档配置
+type DocumentConfig struct {
+	SaveOptions SaveOptions `json:"saveOptions"` // 详细保存选项
+}
+
 // EditorConfig 定义编辑器配置
 type EditorConfig struct {
 	FontSize        int          `json:"fontSize"`        // 字体大小
@@ -45,6 +60,7 @@ type PathsConfig struct {
 // AppConfig 应用配置 - 包含业务配置和路径配置
 type AppConfig struct {
 	Editor   EditorConfig   `json:"editor"`   // 编辑器配置
+	Document DocumentConfig `json:"document"` // 文档配置
 	Paths    PathsConfig    `json:"paths"`    // 路径配置
 	Metadata ConfigMetadata `json:"metadata"` // 配置元数据
 }
@@ -65,6 +81,7 @@ func NewDefaultAppConfig() *AppConfig {
 
 	// 默认路径配置
 	rootDir := filepath.Join(homePath, ".voidraft")
+	dataDir := filepath.Join(rootDir, "data")
 
 	return &AppConfig{
 		Editor: EditorConfig{
@@ -75,9 +92,16 @@ func NewDefaultAppConfig() *AppConfig {
 			Language:        LangZhCN,
 			AlwaysOnTop:     false,
 		},
+		Document: DocumentConfig{
+			SaveOptions: SaveOptions{
+				AutoSaveDelay:   5000, // 5秒后自动保存
+				ChangeThreshold: 500,  // 500个字符变更触发保存
+				MinSaveInterval: 1000, // 最小间隔1000毫秒
+			},
+		},
 		Paths: PathsConfig{
 			LogPath:  filepath.Join(rootDir, "logs"),
-			DataPath: filepath.Join(rootDir, "data"),
+			DataPath: dataDir,
 		},
 		Metadata: ConfigMetadata{
 			Version:     "1.0.0",
diff --git a/internal/models/document.go b/internal/models/document.go
new file mode 100644
index 0000000..db788da
--- /dev/null
+++ b/internal/models/document.go
@@ -0,0 +1,41 @@
+package models
+
+import (
+	"time"
+)
+
+// DocumentMeta 文档元数据
+type DocumentMeta struct {
+	ID          string    `json:"id"`          // 文档唯一标识
+	Title       string    `json:"title"`       // 文档标题
+	LastUpdated time.Time `json:"lastUpdated"` // 最后更新时间
+	CreatedAt   time.Time `json:"createdAt"`   // 创建时间
+}
+
+// Document 表示一个文档
+type Document struct {
+	Meta    DocumentMeta `json:"meta"`    // 元数据
+	Content string       `json:"content"` // 文档内容
+}
+
+// DocumentInfo 文档信息（不包含内容，用于列表展示）
+type DocumentInfo struct {
+	ID          string    `json:"id"`          // 文档ID
+	Title       string    `json:"title"`       // 文档标题
+	LastUpdated time.Time `json:"lastUpdated"` // 最后更新时间
+	Path        string    `json:"path"`        // 文档路径
+}
+
+// NewDefaultDocument 创建默认文档
+func NewDefaultDocument() *Document {
+	now := time.Now()
+	return &Document{
+		Meta: DocumentMeta{
+			ID:          "default",
+			Title:       "默认文档",
+			LastUpdated: now,
+			CreatedAt:   now,
+		},
+		Content: "// 在此处编写文本...",
+	}
+}
diff --git a/internal/services/config_service.go b/internal/services/config_service.go
index 57b17b1..eaba9c7 100644
--- a/internal/services/config_service.go
+++ b/internal/services/config_service.go
@@ -35,9 +35,8 @@ func (p *DefaultConfigPathProvider) GetConfigPath() string {
 
 // ConfigOption 配置服务选项
 type ConfigOption struct {
-	Logger          *log.LoggerService // 日志服务
-	PathProvider    ConfigPath         // 路径提供者
-	AutoSaveEnabled bool               // 是否启用自动保存
+	Logger       *log.LoggerService // 日志服务
+	PathProvider ConfigPath         // 路径提供者
 }
 
 // ConfigService 提供配置管理功能
@@ -98,7 +97,6 @@ func NewConfigService(opt ...ConfigOption) *ConfigService {
 	// 创建存储
 	store := NewStore[models.AppConfig](StoreOption{
 		FilePath: configPath,
-		AutoSave: option.AutoSaveEnabled,
 		Logger:   logger,
 	})
 
diff --git a/internal/services/document_diff.go b/internal/services/document_diff.go
new file mode 100644
index 0000000..b53a8b1
--- /dev/null
+++ b/internal/services/document_diff.go
@@ -0,0 +1,306 @@
+package services
+
+// Edit 表示编辑操作类型
+type EditType int
+
+const (
+	// EditInsert 插入操作
+	EditInsert EditType = iota
+	// EditDelete 删除操作
+	EditDelete
+	// EditEqual 相等部分
+	EditEqual
+)
+
+// Edit 表示单个编辑操作
+type Edit struct {
+	Type    EditType // 操作类型
+	Content string   // 操作内容
+}
+
+// DiffResult 包含差异比较的结果信息
+type DiffResult struct {
+	Edits         []Edit // 编辑操作列表
+	InsertCount   int    // 插入的字符数
+	DeleteCount   int    // 删除的字符数
+	ChangedLines  int    // 变更的行数
+	TotalChanges  int    // 总变更字符数（插入+删除）
+	ChangedTokens int    // 变更的token数（如单词、标识符等）
+}
+
+// calculateChangesDetailed 使用Myers差分算法计算两个字符串之间的具体变更
+func calculateChangesDetailed(oldText, newText string) DiffResult {
+	// 将文本分割成行
+	oldLines := splitLines(oldText)
+	newLines := splitLines(newText)
+
+	// 计算行级别的差异
+	edits := computeLineEdits(oldLines, newLines)
+
+	// 计算变更统计
+	result := DiffResult{
+		Edits: edits,
+	}
+
+	// 统计变更
+	for _, edit := range edits {
+		switch edit.Type {
+		case EditInsert:
+			result.InsertCount += len(edit.Content)
+			result.ChangedLines++
+		case EditDelete:
+			result.DeleteCount += len(edit.Content)
+			result.ChangedLines++
+		}
+	}
+
+	result.TotalChanges = result.InsertCount + result.DeleteCount
+	result.ChangedTokens = estimateChangedTokens(edits)
+
+	return result
+}
+
+// splitLines 将文本分割成行
+func splitLines(text string) []string {
+	var lines []string
+	var currentLine string
+
+	for _, char := range text {
+		if char == '\n' {
+			lines = append(lines, currentLine)
+			currentLine = ""
+		} else {
+			currentLine += string(char)
+		}
+	}
+
+	// 添加最后一行（如果不是以换行符结尾）
+	if currentLine != "" {
+		lines = append(lines, currentLine)
+	}
+
+	return lines
+}
+
+// computeLineEdits 使用Myers差分算法计算行级别的差异
+func computeLineEdits(oldLines, newLines []string) []Edit {
+	var edits []Edit
+
+	// 使用Myers差分算法计算行级别的差异
+	script := myersDiff(oldLines, newLines)
+
+	// 将差异脚本转换为编辑操作
+	for _, op := range script {
+		switch op.Type {
+		case EditEqual:
+			edits = append(edits, Edit{
+				Type:    EditEqual,
+				Content: oldLines[op.OldStart],
+			})
+		case EditDelete:
+			edits = append(edits, Edit{
+				Type:    EditDelete,
+				Content: oldLines[op.OldStart],
+			})
+		case EditInsert:
+			edits = append(edits, Edit{
+				Type:    EditInsert,
+				Content: newLines[op.NewStart],
+			})
+		}
+	}
+
+	return edits
+}
+
+// DiffOp 表示差分操作
+type DiffOp struct {
+	Type     EditType
+	OldStart int
+	OldEnd   int
+	NewStart int
+	NewEnd   int
+}
+
+// myersDiff 实现Myers差分算法
+func myersDiff(oldLines, newLines []string) []DiffOp {
+	// 基本思路：Myers差分算法通过建立编辑图来寻找最短编辑路径
+	// 简化版实现
+	var script []DiffOp
+
+	oldLen := len(oldLines)
+	newLen := len(newLines)
+
+	// 使用动态规划找出最长公共子序列(LCS)
+	lcs := longestCommonSubsequence(oldLines, newLines)
+
+	// 根据LCS构建差分脚本
+	oldIndex, newIndex := 0, 0
+	for _, entry := range lcs {
+		// 处理LCS之前的差异
+		for oldIndex < entry.OldIndex {
+			script = append(script, DiffOp{
+				Type:     EditDelete,
+				OldStart: oldIndex,
+				OldEnd:   oldIndex + 1,
+				NewStart: newIndex,
+				NewEnd:   newIndex,
+			})
+			oldIndex++
+		}
+
+		for newIndex < entry.NewIndex {
+			script = append(script, DiffOp{
+				Type:     EditInsert,
+				OldStart: oldIndex,
+				OldEnd:   oldIndex,
+				NewStart: newIndex,
+				NewEnd:   newIndex + 1,
+			})
+			newIndex++
+		}
+
+		// 处理相等部分
+		script = append(script, DiffOp{
+			Type:     EditEqual,
+			OldStart: oldIndex,
+			OldEnd:   oldIndex + 1,
+			NewStart: newIndex,
+			NewEnd:   newIndex + 1,
+		})
+
+		oldIndex++
+		newIndex++
+	}
+
+	// 处理剩余差异
+	for oldIndex < oldLen {
+		script = append(script, DiffOp{
+			Type:     EditDelete,
+			OldStart: oldIndex,
+			OldEnd:   oldIndex + 1,
+			NewStart: newIndex,
+			NewEnd:   newIndex,
+		})
+		oldIndex++
+	}
+
+	for newIndex < newLen {
+		script = append(script, DiffOp{
+			Type:     EditInsert,
+			OldStart: oldIndex,
+			OldEnd:   oldIndex,
+			NewStart: newIndex,
+			NewEnd:   newIndex + 1,
+		})
+		newIndex++
+	}
+
+	return script
+}
+
+// LCSEntry 表示最长公共子序列中的一个条目
+type LCSEntry struct {
+	OldIndex int
+	NewIndex int
+}
+
+// longestCommonSubsequence 寻找两个字符串数组的最长公共子序列
+func longestCommonSubsequence(oldLines, newLines []string) []LCSEntry {
+	oldLen := len(oldLines)
+	newLen := len(newLines)
+
+	// 创建动态规划表
+	dp := make([][]int, oldLen+1)
+	for i := range dp {
+		dp[i] = make([]int, newLen+1)
+	}
+
+	// 填充DP表
+	for i := 1; i <= oldLen; i++ {
+		for j := 1; j <= newLen; j++ {
+			if oldLines[i-1] == newLines[j-1] {
+				dp[i][j] = dp[i-1][j-1] + 1
+			} else {
+				dp[i][j] = max(dp[i-1][j], dp[i][j-1])
+			}
+		}
+	}
+
+	// 回溯找出LCS
+	var lcs []LCSEntry
+	i, j := oldLen, newLen
+	for i > 0 && j > 0 {
+		if oldLines[i-1] == newLines[j-1] {
+			lcs = append([]LCSEntry{{OldIndex: i - 1, NewIndex: j - 1}}, lcs...)
+			i--
+			j--
+		} else if dp[i-1][j] > dp[i][j-1] {
+			i--
+		} else {
+			j--
+		}
+	}
+
+	return lcs
+}
+
+// max 返回两个整数中的较大值
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+// estimateChangedTokens 估计变更的token数量
+// 这里使用简单的单词分割来估计
+func estimateChangedTokens(edits []Edit) int {
+	tokenCount := 0
+
+	for _, edit := range edits {
+		switch edit.Type {
+		case EditInsert, EditDelete:
+			// 简单地将内容按空白字符分割成单词
+			words := splitIntoWords(edit.Content)
+			tokenCount += len(words)
+		}
+	}
+
+	return tokenCount
+}
+
+// splitIntoWords 将文本分割成单词
+func splitIntoWords(text string) []string {
+	var words []string
+	var currentWord string
+
+	// 简单的状态机:
+	// - 如果是字母、数字或下划线，添加到当前单词
+	// - 否则，结束当前单词并开始新单词
+	for _, char := range text {
+		if isWordChar(char) {
+			currentWord += string(char)
+		} else {
+			if currentWord != "" {
+				words = append(words, currentWord)
+				currentWord = ""
+			}
+		}
+	}
+
+	// 添加最后一个单词（如果有）
+	if currentWord != "" {
+		words = append(words, currentWord)
+	}
+
+	return words
+}
+
+// isWordChar 判断字符是否是单词字符（字母、数字或下划线）
+func isWordChar(char rune) bool {
+	return (char >= 'a' && char <= 'z') ||
+		(char >= 'A' && char <= 'Z') ||
+		(char >= '0' && char <= '9') ||
+		char == '_'
+}
diff --git a/internal/services/document_service.go b/internal/services/document_service.go
new file mode 100644
index 0000000..4fa1d20
--- /dev/null
+++ b/internal/services/document_service.go
@@ -0,0 +1,592 @@
+package services
+
+import (
+	"errors"
+	"fmt"
+	"github.com/wailsapp/wails/v3/pkg/services/log"
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+	"voidraft/internal/models"
+)
+
+// SaveTrigger 保存触发器类型
+type SaveTrigger int
+
+const (
+	// SaveTriggerAuto 自动保存
+	SaveTriggerAuto SaveTrigger = iota
+	// SaveTriggerManual 手动触发保存
+	SaveTriggerManual
+	// SaveTriggerThreshold 超过阈值触发保存
+	SaveTriggerThreshold
+	// SaveTriggerShutdown 程序关闭触发保存
+	SaveTriggerShutdown
+)
+
+// DocumentError 文档操作错误
+type DocumentError struct {
+	Operation string // 操作名称
+	Err       error  // 原始错误
+}
+
+// Error 实现error接口
+func (e *DocumentError) Error() string {
+	return fmt.Sprintf("document error during %s: %v", e.Operation, e.Err)
+}
+
+// Unwrap 获取原始错误
+func (e *DocumentError) Unwrap() error {
+	return e.Err
+}
+
+// DocumentService 提供文档管理功能
+type DocumentService struct {
+	configService  *ConfigService
+	logger         *log.LoggerService
+	activeDoc      *models.Document
+	docStore       *Store[models.Document]
+	memoryCache    *models.Document // 内存缓存，小改动只更新此缓存
+	lock           sync.RWMutex
+	lastSaveTime   time.Time
+	changeCounter  int                       // 变更计数器，记录自上次保存后的变更数量
+	saveTimer      *time.Timer               // 自动保存定时器
+	pendingSave    bool                      // 是否有等待保存的更改
+	saveChannel    chan SaveTrigger          // 保存通道，用于接收保存触发信号
+	shutdownChan   chan struct{}             // 关闭通道，用于程序退出时通知保存协程
+	shutdownWg     sync.WaitGroup            // 等待组，用于确保保存协程正常退出
+	onSaveCallback func(trigger SaveTrigger) // 保存回调函数
+}
+
+// NewDocumentService 创建新的文档服务实例
+func NewDocumentService(configService *ConfigService, logger *log.LoggerService) *DocumentService {
+	if logger == nil {
+		logger = log.New()
+	}
+
+	service := &DocumentService{
+		configService: configService,
+		logger:        logger,
+		saveChannel:   make(chan SaveTrigger, 10),
+		shutdownChan:  make(chan struct{}),
+		lastSaveTime:  time.Now(),
+	}
+
+	return service
+}
+
+// Initialize 初始化文档服务
+func (ds *DocumentService) Initialize() error {
+	// 确保文档目录存在
+	err := ds.ensureDocumentsDir()
+	if err != nil {
+		ds.logger.Error("Document: Failed to ensure documents directory", "error", err)
+		return &DocumentError{Operation: "initialize", Err: err}
+	}
+
+	// 初始化文档存储
+	err = ds.initDocumentStore()
+	if err != nil {
+		ds.logger.Error("Document: Failed to initialize document store", "error", err)
+		return &DocumentError{Operation: "init_store", Err: err}
+	}
+
+	// 加载默认文档
+	err = ds.LoadDefaultDocument()
+	if err != nil {
+		ds.logger.Error("Document: Failed to load default document", "error", err)
+		return &DocumentError{Operation: "load_default", Err: err}
+	}
+
+	// 启动保存处理协程
+	ds.startSaveProcessor()
+
+	return nil
+}
+
+// startSaveProcessor 启动保存处理协程
+func (ds *DocumentService) startSaveProcessor() {
+	ds.shutdownWg.Add(1)
+	go func() {
+		defer ds.shutdownWg.Done()
+
+		for {
+			select {
+			case trigger := <-ds.saveChannel:
+				// 接收到保存信号，执行保存
+				ds.saveToStore(trigger)
+			case <-ds.shutdownChan:
+				// 接收到关闭信号，保存并退出
+				if ds.pendingSave {
+					ds.saveToStore(SaveTriggerShutdown)
+				}
+				return
+			}
+		}
+	}()
+}
+
+// scheduleAutoSave 安排自动保存
+func (ds *DocumentService) scheduleAutoSave() {
+	// 获取配置
+	config, err := ds.configService.GetConfig()
+	if err != nil {
+		ds.logger.Error("Document: Failed to get config for auto save", "error", err)
+		// 使用默认值2秒
+		ds.scheduleTimerWithDelay(2000)
+		return
+	}
+
+	// 检查配置有效性
+	if config == nil {
+		ds.logger.Error("Document: Config is nil, using default delay")
+		ds.scheduleTimerWithDelay(2000)
+		return
+	}
+
+	// 打印保存设置，便于调试
+	ds.logger.Debug("Document: Auto save settings",
+		"autoSaveDelay", config.Document.SaveOptions.AutoSaveDelay,
+		"changeThreshold", config.Document.SaveOptions.ChangeThreshold,
+		"minSaveInterval", config.Document.SaveOptions.MinSaveInterval)
+
+	ds.lock.Lock()
+	defer ds.lock.Unlock()
+
+	// 重置自动保存定时器
+	if ds.saveTimer != nil {
+		ds.saveTimer.Stop()
+	}
+
+	// 创建新的自动保存定时器
+	autoSaveDelay := config.Document.SaveOptions.AutoSaveDelay
+	ds.logger.Debug("Document: Scheduling auto save", "delay", autoSaveDelay)
+	ds.scheduleTimerWithDelay(autoSaveDelay)
+}
+
+// scheduleTimerWithDelay 使用指定延迟创建定时器
+func (ds *DocumentService) scheduleTimerWithDelay(delayMs int) {
+	ds.saveTimer = time.AfterFunc(time.Duration(delayMs)*time.Millisecond, func() {
+		// 只有在有待保存的更改时才触发保存
+		if ds.pendingSave {
+			ds.saveChannel <- SaveTriggerAuto
+		}
+	})
+}
+
+// saveToStore 保存文档到存储
+func (ds *DocumentService) saveToStore(trigger SaveTrigger) {
+	ds.lock.Lock()
+	defer ds.lock.Unlock()
+
+	// 如果没有内存缓存或活动文档，直接返回
+	if ds.memoryCache == nil || ds.activeDoc == nil {
+		return
+	}
+
+	// 获取配置
+	config, err := ds.configService.GetConfig()
+	if err != nil {
+		ds.logger.Error("Document: Failed to get config for save", "error", err)
+		// 继续使用默认值
+	}
+
+	// 设置默认值
+	minInterval := 500 // 默认500毫秒
+
+	// 如果成功获取了配置，使用配置值
+	if err == nil && config != nil {
+		minInterval = config.Document.SaveOptions.MinSaveInterval
+	}
+
+	// 如果是自动保存，检查最小保存间隔
+	if trigger == SaveTriggerAuto {
+		now := time.Now()
+		elapsed := now.Sub(ds.lastSaveTime).Milliseconds()
+
+		// 如果距离上次保存时间太短，重新安排保存
+		if elapsed < int64(minInterval) {
+			// 重新安排保存，延迟 = 最小间隔 - 已经过的时间
+			delayMs := minInterval - int(elapsed)
+			ds.logger.Debug("Document: Rescheduling save due to min interval",
+				"minInterval", minInterval,
+				"elapsed", elapsed,
+				"delayMs", delayMs)
+
+			ds.lock.Unlock() // 解锁后再启动定时器，避免死锁
+			ds.scheduleTimerWithDelay(delayMs)
+			ds.lock.Lock() // 恢复锁
+			return
+		}
+	}
+
+	// 更新活动文档
+	ds.activeDoc = ds.memoryCache
+	ds.activeDoc.Meta.LastUpdated = time.Now()
+
+	// 保存到存储
+	ds.logger.Info("Document: Saving document to disk",
+		"trigger", trigger,
+		"id", ds.activeDoc.Meta.ID,
+		"contentLength", len(ds.activeDoc.Content))
+
+	err = ds.docStore.Set(*ds.activeDoc)
+	if err != nil {
+		ds.logger.Error("Document: Failed to save document", "trigger", trigger, "error", err)
+		return
+	}
+
+	// 强制确保保存到磁盘
+	err = ds.docStore.Save()
+	if err != nil {
+		ds.logger.Error("Document: Failed to force save document", "trigger", trigger, "error", err)
+		return
+	}
+
+	// 重置计数器和状态
+	ds.changeCounter = 0
+	ds.pendingSave = false
+	ds.lastSaveTime = time.Now()
+
+	// 触发回调
+	if ds.onSaveCallback != nil {
+		ds.onSaveCallback(trigger)
+	}
+
+	ds.logger.Info("Document: Saved document", "trigger", trigger, "id", ds.activeDoc.Meta.ID)
+}
+
+// Shutdown 关闭文档服务，确保所有数据保存
+func (ds *DocumentService) Shutdown() {
+	// 发送关闭信号
+	close(ds.shutdownChan)
+
+	// 等待保存协程退出
+	ds.shutdownWg.Wait()
+
+	// 停止定时器
+	if ds.saveTimer != nil {
+		ds.saveTimer.Stop()
+	}
+
+	ds.logger.Info("Document: Service shutdown completed")
+}
+
+// SetSaveCallback 设置保存回调函数
+func (ds *DocumentService) SetSaveCallback(callback func(trigger SaveTrigger)) {
+	ds.onSaveCallback = callback
+}
+
+// initDocumentStore 初始化文档存储
+func (ds *DocumentService) initDocumentStore() error {
+	docPath, err := ds.getDefaultDocumentPath()
+	if err != nil {
+		return err
+	}
+
+	ds.logger.Info("Document: Initializing document store", "path", docPath)
+
+	// 创建文档存储，强制保存和Service触发的保存都使用同步保存到磁盘
+	ds.docStore = NewStore[models.Document](StoreOption{
+		FilePath: docPath,
+		AutoSave: true, // 启用自动保存，确保Set操作直接写入磁盘
+		Logger:   ds.logger,
+	})
+
+	return nil
+}
+
+// ensureDocumentsDir 确保文档目录存在
+func (ds *DocumentService) ensureDocumentsDir() error {
+	config, err := ds.configService.GetConfig()
+	if err != nil {
+		return err
+	}
+
+	// 创建文档目录
+	docsDir := filepath.Join(config.Paths.DataPath, "docs")
+	err = os.MkdirAll(docsDir, 0755)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// getDocumentsDir 获取文档目录路径
+func (ds *DocumentService) getDocumentsDir() (string, error) {
+	config, err := ds.configService.GetConfig()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(config.Paths.DataPath, "docs"), nil
+}
+
+// getDefaultDocumentPath 获取默认文档路径
+func (ds *DocumentService) getDefaultDocumentPath() (string, error) {
+	docsDir, err := ds.getDocumentsDir()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(docsDir, "default.json"), nil
+}
+
+// LoadDefaultDocument 加载默认文档
+func (ds *DocumentService) LoadDefaultDocument() error {
+	// 从Store加载文档
+	doc := ds.docStore.Get()
+
+	// 检查文档是否有效
+	if doc.Meta.ID == "" {
+		// 创建默认文档
+		defaultDoc := models.NewDefaultDocument()
+		ds.lock.Lock()
+		ds.activeDoc = defaultDoc
+		ds.memoryCache = defaultDoc // 同时更新内存缓存
+		ds.lock.Unlock()
+
+		// 保存默认文档
+		err := ds.docStore.Set(*defaultDoc)
+		if err != nil {
+			return &DocumentError{Operation: "save_default", Err: err}
+		}
+
+		ds.logger.Info("Document: Created and saved default document")
+		return nil
+	}
+
+	// 设置为活动文档
+	ds.lock.Lock()
+	ds.activeDoc = &doc
+	ds.memoryCache = &doc // 同时更新内存缓存
+	ds.lock.Unlock()
+
+	ds.logger.Info("Document: Loaded default document", "id", doc.Meta.ID)
+	return nil
+}
+
+// GetActiveDocument 获取当前活动文档
+func (ds *DocumentService) GetActiveDocument() (*models.Document, error) {
+	ds.lock.RLock()
+	defer ds.lock.RUnlock()
+
+	if ds.memoryCache == nil {
+		return nil, errors.New("no active document loaded")
+	}
+
+	// 返回内存缓存中的文档，确保获得最新版本
+	return ds.memoryCache, nil
+}
+
+// GetActiveDocumentContent 获取当前活动文档内容
+func (ds *DocumentService) GetActiveDocumentContent() (string, error) {
+	ds.lock.RLock()
+	defer ds.lock.RUnlock()
+
+	if ds.memoryCache == nil {
+		return "", errors.New("no active document loaded")
+	}
+
+	return ds.memoryCache.Content, nil
+}
+
+// UpdateActiveDocumentContent 更新当前活动文档内容
+func (ds *DocumentService) UpdateActiveDocumentContent(content string) error {
+	// 获取配置
+	config, err := ds.configService.GetConfig()
+	if err != nil {
+		ds.logger.Error("Document: Failed to get config for content update", "error", err)
+		// 出错时仍继续，使用默认行为
+	}
+
+	// 设置默认配置值
+	threshold := 100 // 默认值
+
+	// 如果成功获取了配置，使用配置值
+	if err == nil && config != nil {
+		threshold = config.Document.SaveOptions.ChangeThreshold
+	}
+
+	ds.lock.Lock()
+
+	if ds.memoryCache == nil {
+		ds.lock.Unlock()
+		return errors.New("no active document loaded")
+	}
+
+	// 计算变更数量
+	oldContent := ds.memoryCache.Content
+	changedChars := calculateChanges(oldContent, content)
+	ds.changeCounter += changedChars
+
+	// 调试信息
+	ds.logger.Debug("Document: Content updated",
+		"changedChars", changedChars,
+		"totalChanges", ds.changeCounter,
+		"threshold", threshold)
+
+	// 更新内存缓存
+	ds.memoryCache.Content = content
+	ds.memoryCache.Meta.LastUpdated = time.Now()
+	ds.pendingSave = true
+
+	// 如果变更超过阈值，触发保存
+	if ds.changeCounter >= threshold {
+		ds.logger.Info("Document: Change threshold reached, triggering save",
+			"threshold", threshold,
+			"changes", ds.changeCounter)
+
+		// 提前解锁，避免死锁
+		ds.lock.Unlock()
+		ds.saveChannel <- SaveTriggerThreshold
+	} else {
+		// 否则安排自动保存
+		ds.lock.Unlock()
+		ds.scheduleAutoSave()
+	}
+
+	return nil
+}
+
+// SaveDocumentSync 同步保存文档内容 (用于页面关闭前同步保存)
+func (ds *DocumentService) SaveDocumentSync(content string) error {
+	ds.lock.Lock()
+
+	if ds.memoryCache == nil {
+		ds.lock.Unlock()
+		return errors.New("no active document loaded")
+	}
+
+	// 更新内存缓存
+	ds.memoryCache.Content = content
+	ds.memoryCache.Meta.LastUpdated = time.Now()
+
+	// 直接保存到存储
+	doc := *ds.memoryCache
+	ds.lock.Unlock()
+
+	err := ds.docStore.Set(doc)
+	if err != nil {
+		return err
+	}
+
+	// 重置状态
+	ds.lock.Lock()
+	ds.pendingSave = false
+	ds.changeCounter = 0
+	ds.lastSaveTime = time.Now()
+	ds.lock.Unlock()
+
+	ds.logger.Info("Document: Synced document save completed")
+	return nil
+}
+
+// ForceSave 强制保存当前文档
+func (ds *DocumentService) ForceSave() error {
+	ds.logger.Info("Document: Force save triggered")
+
+	// 获取当前文档内容
+	ds.lock.RLock()
+	if ds.memoryCache == nil {
+		ds.lock.RUnlock()
+		return errors.New("no active document loaded")
+	}
+	content := ds.memoryCache.Content
+	ds.lock.RUnlock()
+
+	// 使用同步方法直接保存到磁盘
+	if err := ds.SaveDocumentSync(content); err != nil {
+		ds.logger.Error("Document: Force save failed", "error", err)
+		return err
+	}
+
+	ds.logger.Info("Document: Force save completed successfully")
+	return nil
+}
+
+// calculateChanges 计算两个字符串之间的变更数量
+func calculateChanges(old, new string) int {
+	// 使用详细的差分算法计算变更
+	result := calculateChangesDetailed(old, new)
+
+	// 返回总变更字符数
+	return result.TotalChanges
+}
+
+// GetDiffInfo 获取两个文本之间的详细差异信息
+func (ds *DocumentService) GetDiffInfo(oldText, newText string) DiffResult {
+	return calculateChangesDetailed(oldText, newText)
+}
+
+// GetSaveSettings 获取文档保存设置
+func (ds *DocumentService) GetSaveSettings() (*models.DocumentConfig, error) {
+	config, err := ds.configService.GetConfig()
+	if err != nil {
+		return nil, &DocumentError{Operation: "get_save_settings", Err: err}
+	}
+	return &config.Document, nil
+}
+
+// UpdateSaveSettings 更新文档保存设置
+func (ds *DocumentService) UpdateSaveSettings(docConfig models.DocumentConfig) error {
+	// 获取当前配置
+	config, err := ds.configService.GetConfig()
+	if err != nil {
+		return &DocumentError{Operation: "update_save_settings", Err: err}
+	}
+
+	// 更新保存设置
+	config.Document = docConfig
+
+	// 保存配置
+	err = ds.configService.SaveConfig(config)
+	if err != nil {
+		return &DocumentError{Operation: "update_save_settings_save", Err: err}
+	}
+
+	// 安排自动保存（不再需要检查保存模式）
+	ds.scheduleAutoSave()
+
+	ds.logger.Info("Document: Updated save settings")
+	return nil
+}
+
+// ServiceShutdown 实现应用程序关闭时的服务关闭逻辑
+func (ds *DocumentService) ServiceShutdown() error {
+	ds.logger.Info("Document: Service is shutting down, saving document...")
+
+	// 获取当前活动文档
+	ds.lock.RLock()
+	if ds.memoryCache == nil {
+		ds.lock.RUnlock()
+		ds.logger.Info("Document: No active document to save on shutdown")
+		return nil
+	}
+
+	// 获取要保存的内容
+	content := ds.memoryCache.Content
+	ds.lock.RUnlock()
+
+	// 同步保存文档内容
+	err := ds.SaveDocumentSync(content)
+	if err != nil {
+		ds.logger.Error("Document: Failed to save document on shutdown", "error", err)
+		return err
+	}
+
+	ds.logger.Info("Document: Document saved successfully on shutdown")
+
+	// 关闭通道以通知保存协程退出
+	close(ds.shutdownChan)
+
+	// 等待保存协程退出
+	ds.shutdownWg.Wait()
+
+	// 停止所有计时器
+	if ds.saveTimer != nil {
+		ds.saveTimer.Stop()
+	}
+
+	return nil
+}
diff --git a/internal/services/service_manager.go b/internal/services/service_manager.go
index 66d73f7..dc71c71 100644
--- a/internal/services/service_manager.go
+++ b/internal/services/service_manager.go
@@ -7,8 +7,9 @@ import (
 
 // ServiceManager 服务管理器，负责协调各个服务
 type ServiceManager struct {
-	configService *ConfigService
-	logger        *log.LoggerService
+	configService   *ConfigService
+	documentService *DocumentService
+	logger          *log.LoggerService
 }
 
 // NewServiceManager 创建新的服务管理器实例
@@ -18,14 +19,24 @@ func NewServiceManager() *ServiceManager {
 
 	// 初始化配置服务
 	configService := NewConfigService(ConfigOption{
-		Logger:          logger,
-		PathProvider:    nil,
-		AutoSaveEnabled: true,
+		Logger:       logger,
+		PathProvider: nil,
 	})
 
+	// 初始化文档服务
+	documentService := NewDocumentService(configService, logger)
+
+	// 初始化文档服务
+	err := documentService.Initialize()
+	if err != nil {
+		logger.Error("Failed to initialize document service", "error", err)
+		panic(err)
+	}
+
 	return &ServiceManager{
-		configService: configService,
-		logger:        logger,
+		configService:   configService,
+		documentService: documentService,
+		logger:          logger,
 	}
 }
 
@@ -33,10 +44,6 @@ func NewServiceManager() *ServiceManager {
 func (sm *ServiceManager) GetServices() []application.Service {
 	return []application.Service{
 		application.NewService(sm.configService),
+		application.NewService(sm.documentService),
 	}
 }
-
-// GetConfigService 获取配置服务实例
-func (sm *ServiceManager) GetConfigService() *ConfigService {
-	return sm.configService
-}