diff --git a/components/timeline/doc/index.en-US.md b/components/timeline/doc/index.en-US.md
index a421041da96..7672698807a 100644
--- a/components/timeline/doc/index.en-US.md
+++ b/components/timeline/doc/index.en-US.md
@@ -44,7 +44,7 @@ Node of timeline
 
 | Property | Description | Type | Default |
 | -------- | ----------- | ---- | ------- |
-| `[nzColor]` | Set the circle's color to `'blue' \| 'red' \| 'green' \| 'gray'` or other custom colors (css color) | `string` | `blue` |
+| `[nzColor]` | Set the circle's color to `'blue' \| 'red' \| 'green' \| 'gray'`| `string` | `blue` |
 | `[nzDot]` | Customize timeline dot | `string \| TemplateRef<void>` | - |
 | `[nzPosition]` | Customize position, only works when `nzMode` is `custom` | `'left' \| 'right'` | - |
-| `[NzLabel]` | Set the label |  `string \| TemplateRef<void>` | - |
\ No newline at end of file
+| `[nzLabel]` | Set the label |  `string \| TemplateRef<void>` | - |
diff --git a/components/timeline/doc/index.zh-CN.md b/components/timeline/doc/index.zh-CN.md
index 3775231df44..8d6685e546f 100644
--- a/components/timeline/doc/index.zh-CN.md
+++ b/components/timeline/doc/index.zh-CN.md
@@ -45,7 +45,7 @@ import { NzTimelineModule } from 'ng-zorro-antd/timeline';
 
 | 参数 | 说明 | 类型 | 默认值 |
 | --- | --- | --- | --- |
-| `[nzColor]` | 指定圆圈颜色 `'blue' \| 'red' \| 'green' \| 'gray'`，或自定义的色值 (CSS 颜色) | `string` | blue |
+| `[nzColor]` | 指定圆圈颜色 `'blue' \| 'red' \| 'green' \| 'gray'` | `string` | blue |
 | `[nzDot]` | 自定义时间轴点 | `string \| TemplateRef<void>` | - |
 | `[nzPosition]` | 自定义节点位置，仅当 `nzMode` 为 `custom` 时有效 | `'left' \| 'right'` | - |
 | `[NzLabel]` | 设置标签 |  `string \| TemplateRef<void>` | - |