diff --git a/api/@ohos.arkui.UIContext.d.ts b/api/@ohos.arkui.UIContext.d.ts
index 4881309f6f54c99c7705b3933b57a358f5123edc..8d7fde48a61b84de71d2a470418e398eb4fa76cf 100644
--- a/api/@ohos.arkui.UIContext.d.ts
+++ b/api/@ohos.arkui.UIContext.d.ts
@@ -3702,7 +3702,19 @@ export declare class ComponentSnapshot {
  * @arkts 1.1&1.2
  */
 export declare class UIContext {
-      /**
+
+  /**
+   * Get id of the UI instance.
+   *
+   * @returns { number } Returns id of the UI instance.
+   * @syscap SystemCapability.ArkUI.ArkUI.Full
+   * @crossplatform
+   * @atomicservice
+   * @since 22
+   */
+  getId(): number;
+  
+  /**
    * Checks whether the UiContext object ia available.
    *
    * @returns { boolean } Returns true if the UIConetxt object is available.