diff --git a/api/@internal/component/ets/text_area.d.ts b/api/@internal/component/ets/text_area.d.ts
index 5367dcb957f4d052d85780bf7b5f47e1330e7e7a..ef65babd32eca5f5edcbb2cdd854e1622a3c74a9 100644
--- a/api/@internal/component/ets/text_area.d.ts
+++ b/api/@internal/component/ets/text_area.d.ts
@@ -30,6 +30,7 @@ import { InputCounterOptions, TextContentControllerBase, SelectionOptions,
     TextDecorationOptions, CommonMethod, Callback, Optional, Bindable } from './common';
 import { CustomBuilder } from './builder';
 import { Resource } from '../../global/resource';
+import { ColorMetrics } from '../Graphics';
 /*** endif */
 
 /**
@@ -1387,6 +1388,18 @@ declare class TextAreaAttribute extends CommonMethod<TextAreaAttribute> {
    */
   barState(value: BarState): TextAreaAttribute;
 
+  /**
+   * Set scrollbar color of TextArea.
+   *
+   * @param { Optional<ColorMetrics> } color  - Color of the rich TextArea scrollbar.
+   * @returns { TextAreaAttribute } returns the instance of the TextAreaAttribute.
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @crossplatform
+   * @atomicservice
+   * @since 21
+   */
+  scrollBarColor(color: Optional<ColorMetrics>): TextAreaAttribute;
+
   /**
    * Controls whether the selection menu pops up.
    *