diff --git a/zh-cn/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md b/zh-cn/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md
index 015dbd927490afba984a17dad948abf956c4d9e7..4530baedb4706d6dfc3bf9d89b7fa3bac82d1e57 100644
--- a/zh-cn/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md
+++ b/zh-cn/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md
@@ -10,13 +10,13 @@
 
 ## 接口
 
-CanvasRenderingContext2D(setting: RenderingContextSetting)
+CanvasRenderingContext2D(settings?: RenderingContextSettings)
 
 **参数：**
 
 | 参数名     | 参数类型                                     | 必填   | 默认值  | 参数描述                                     |
 | ------- | ---------------------------------------- | ---- | ---- | ---------------------------------------- |
-| setting | [RenderingContextSettings](#renderingcontextsettings) | 是    | -    | 见[RenderingContextSettings](#renderingcontextsettings)。 |
+| setting | [RenderingContextSettings](#renderingcontextsettings) | 否    | -    | 见[RenderingContextSettings](#renderingcontextsettings)。 |
 
 
 ### RenderingContextSettings
diff --git a/zh-cn/application-dev/reference/arkui-ts/ts-offscreencanvasrenderingcontext2d.md b/zh-cn/application-dev/reference/arkui-ts/ts-offscreencanvasrenderingcontext2d.md
index 12f86b154a72074636b094b34ad99247a7d89942..ecfa4c4be6ad2231530259426d38de7e62b9a4be 100644
--- a/zh-cn/application-dev/reference/arkui-ts/ts-offscreencanvasrenderingcontext2d.md
+++ b/zh-cn/application-dev/reference/arkui-ts/ts-offscreencanvasrenderingcontext2d.md
@@ -10,7 +10,7 @@
 
 ## 接口
 
-OffscreenCanvasRenderingContext2D(width: number, height: number, setting: RenderingContextSettings)
+OffscreenCanvasRenderingContext2D(width: number, height: number, settings?: RenderingContextSettings)
 
 **参数：**
 
@@ -18,7 +18,7 @@ OffscreenCanvasRenderingContext2D(width: number, height: number, setting: Render
 | ------- | ------------------------------------------------------------ | ---- | ------------------------------------ |
 | width   | number                                                       | 是   | 离屏画布的宽度                       |
 | height  | number                                                       | 是   | 离屏画布的高度                       |
-| setting | [RenderingContextSettings](ts-canvasrenderingcontext2d.md#renderingcontextsettings) | 是   | 见RenderingContextSettings接口描述。 |
+| setting | [RenderingContextSettings](ts-canvasrenderingcontext2d.md#renderingcontextsettings) | 否   | 见RenderingContextSettings接口描述。 |
 
 
 ## 属性