diff --git a/packages/theme/src/services/i18n/i18n.ts b/packages/theme/src/services/i18n/i18n.ts
index 30af51aed..5a1f0be15 100644
--- a/packages/theme/src/services/i18n/i18n.ts
+++ b/packages/theme/src/services/i18n/i18n.ts
@@ -19,10 +19,10 @@ export interface AlainI18NService {
 
   /**
    * 翻译
-   * - `interpolateParams` 模板所需要的参数对象
+   * - `params` 模板所需要的参数对象
    * - `isSafe` 是否返回安全字符，自动调用 `bypassSecurityTrustHtml`
    */
-  fanyi(key: string, interpolateParams?: Object, isSafe?: boolean): string;
+  fanyi(key: string, params?: Object, isSafe?: boolean): string;
 
   /**
    * 调用 `use` 触发变更通知
diff --git a/packages/theme/src/services/title/index.en-US.md b/packages/theme/src/services/title/index.en-US.md
index a32f83b93..7dd8d16e7 100644
--- a/packages/theme/src/services/title/index.en-US.md
+++ b/packages/theme/src/services/title/index.en-US.md
@@ -16,3 +16,15 @@ Get the `title` value according to the following order:
 2. Parse the menu data based on the current URL
 3. Get `h1` content in page `alain-default__content-title` or `page-header__title`
 4. Default title
+
+## API
+
+| Name                                           | Type       | Description                     |
+| ---------------------------------------------- | ---------- | ------------------------------- |
+| `default`                                      | `property` | Default title of document title |
+| `separator`                                    | `property` | Separator                       |
+| `prefix`                                       | `property` | Prefix of document title        |
+| `suffix`                                       | `property` | Suffix of document title        |
+| `reverse`                                      | `property` | Whether to reverse              |
+| `setTitle(title?: string | string[])`          | `method`   | Set document title              |
+| `setTitleByI18n(key: string, params?: Object)` | `method`   | Set i18n document title         |
diff --git a/packages/theme/src/services/title/index.zh-CN.md b/packages/theme/src/services/title/index.zh-CN.md
index 1c73128fb..95ce3bb98 100644
--- a/packages/theme/src/services/title/index.zh-CN.md
+++ b/packages/theme/src/services/title/index.zh-CN.md
@@ -16,3 +16,15 @@ type: Service
 2. 根据当前 URL 解析菜单数据
 3. 页面 `alain-default__content-title` 或 `page-header__title` 中获取 `h1` 内容
 4. 默认标题名
+
+## API
+
+| 名称                                           | 类型       | 描述           |
+| ---------------------------------------------- | ---------- | -------------- |
+| `default`                                      | `property` | 设置默认标题名 |
+| `separator`                                    | `property` | 设置分隔符     |
+| `prefix`                                       | `property` | 设置前缀       |
+| `suffix`                                       | `property` | 设置后缀       |
+| `reverse`                                      | `property` | 设置是否反转   |
+| `setTitle(title?: string | string[])`          | `method`   | 设置标题       |
+| `setTitleByI18n(key: string, params?: Object)` | `method`   | 设置国际化标题 |
diff --git a/packages/theme/src/services/title/title.service.spec.ts b/packages/theme/src/services/title/title.service.spec.ts
index 2ce0440f5..457a770d0 100644
--- a/packages/theme/src/services/title/title.service.spec.ts
+++ b/packages/theme/src/services/title/title.service.spec.ts
@@ -40,14 +40,16 @@ describe('Service: Title', () => {
   const notPageName = 'Not Page Name';
 
   function genModule(providers: any[] = [], loadI18n = true) {
-    const i18nProvider: any[] = loadI18n ? [ { provide: ALAIN_I18N_TOKEN, useClass: AlainI18NServiceFake } ] : [];
+    const i18nProvider: any[] = loadI18n
+      ? [{ provide: ALAIN_I18N_TOKEN, useClass: AlainI18NServiceFake }]
+      : [];
     TestBed.configureTestingModule({
       imports: [AlainThemeModule, RouterTestingModule],
       providers: [
         TitleService,
         MenuService,
         { provide: Title, useClass: TestTitleService },
-        ...i18nProvider
+        ...i18nProvider,
       ].concat(providers),
     });
     title = TestBed.get(Title);
@@ -205,5 +207,12 @@ describe('Service: Title', () => {
       i18n.use('en');
       expect(srv.setTitle).toHaveBeenCalled();
     });
+    it('#setTitleByI18n', () => {
+      genModule([], true);
+      srv.suffix = alain;
+      const key = 'aa';
+      srv.setTitleByI18n(key);
+      expect(title.setTitle).toHaveBeenCalledWith(key + ' - ' + alain);
+    });
   });
 });
diff --git a/packages/theme/src/services/title/title.service.ts b/packages/theme/src/services/title/title.service.ts
index 610b5d267..27eaf098c 100644
--- a/packages/theme/src/services/title/title.service.ts
+++ b/packages/theme/src/services/title/title.service.ts
@@ -120,6 +120,13 @@ export class TitleService implements OnDestroy {
     this.title.setTitle(newTitles.join(this._separator));
   }
 
+  /**
+   * 设置国际化标题
+   */
+  setTitleByI18n(key: string, params?: Object) {
+    this.setTitle(this.i18nSrv.fanyi(key, params));
+  }
+
   ngOnDestroy(): void {
     if (this.i18n$) this.i18n$.unsubscribe();
   }