diff --git a/components/page-header/doc/index.en-US.md b/components/page-header/doc/index.en-US.md
index ab77ae9a400..d363fecc7c4 100644
--- a/components/page-header/doc/index.en-US.md
+++ b/components/page-header/doc/index.en-US.md
@@ -31,7 +31,7 @@ import { NzPageHeaderModule } from 'ng-zorro-antd/page-header';
 | `[nzTitle]` | Title string | `string \| TemplateRef<void>` | - |
 | `[nzSubtitle]` | SubTitle string | `string \| TemplateRef<void>` | - |
 | `[nzBackIcon]` | Custom back icon | `string \| TemplateRef<void>` | - |
-| `(nzBack)` | Back icon click event | `EventEmitter<void>` | Call [Location[back]](https://angular.io/api/common/Location#back) when not has observers |
+| `(nzBack)` | Back icon click event | `EventEmitter<void>` | Call [Location[back]](https://angular.io/api/common/Location#back) when the event not subscribed |
 
 ### Page header sections
 | Element | Description |
diff --git a/components/page-header/doc/index.zh-CN.md b/components/page-header/doc/index.zh-CN.md
index b418516ca40..58c413058ad 100644
--- a/components/page-header/doc/index.zh-CN.md
+++ b/components/page-header/doc/index.zh-CN.md
@@ -32,7 +32,7 @@ import { NzPageHeaderModule } from 'ng-zorro-antd/page-header';
 | `[nzTitle]` | title 文字 | `string \| TemplateRef<void>` | - |
 | `[nzSubtitle]` | subTitle 文字 | `string \| TemplateRef<void>` | - |
 | `[nzBackIcon]` | 自定义 back icon | `string \| TemplateRef<void>` | - |
-| `(nzBack)` | 返回按钮的点击事件 | `EventEmitter<void>` | 没有观察者时默认调用 [Location[back]](https://angular.cn/api/common/Location#back) |
+| `(nzBack)` | 返回按钮的点击事件 | `EventEmitter<void>` | 未订阅该事件时默认调用 [Location[back]](https://angular.cn/api/common/Location#back) |
 
 ### Page header 组成部分
 | 元素 | 说明 |