diff --git a/api/@internal/component/ets/text_picker.d.ts b/api/@internal/component/ets/text_picker.d.ts
index 71169824c1e187e571c15d379412814a96c36c27..643529f66008388cd2da95d57203261190b1ae3b 100644
--- a/api/@internal/component/ets/text_picker.d.ts
+++ b/api/@internal/component/ets/text_picker.d.ts
@@ -2090,6 +2090,17 @@ declare interface TextPickerDialogOptionsExt extends TextPickerOptions {
    * @since 20
    */
   enableHapticFeedback?: boolean;
+
+  /**
+   * Background style of selected items.
+   *
+   * @type { ?PickerBackgroundStyle }
+   * @default { color: $r('sys.color.comp_background_tertiary'), borderRadius: $r('sys.float.corner_radius_level12') }
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @atomicservice
+   * @since 20
+   */
+  selectedBackgroundStyle?: PickerBackgroundStyle;
 }
 
 /**