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 c0b297e0fd526f06e43498f03b71ac6d6db91409..066afa49f580423a4be055f6e2e90115736fdf0a 100644
--- a/zh-cn/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md
+++ b/zh-cn/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md
@@ -10,7 +10,7 @@
 
 ## 接口
 
-CanvasRenderingContext2D(setting: RenderingContextSetting)
+CanvasRenderingContext2D(settings?: RenderingContextSettings)
 
 从API version 9开始，该接口支持在ArkTS卡片中使用。
 
@@ -18,7 +18,7 @@ CanvasRenderingContext2D(setting: RenderingContextSetting)
 
 | 参数名     | 参数类型                                     | 必填   | 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 e5f0a624f2ee40635fbdd0d08e655ea0aa3b74c7..cbbaf7779415b66b877fed36035580a3b75f1720 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)
 
 从API version 9开始，该接口支持在ArkTS卡片中使用。
 
@@ -20,7 +20,7 @@ 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