diff --git a/api/@ohos.app.ability.CompletionHandler.d.ts b/api/@ohos.app.ability.CompletionHandler.d.ts
index 835510b07398fb5c4221a785e7714c5b496f411f..ed48691a07aff1c4c3a4644e0ad939ded9dff721 100644
--- a/api/@ohos.app.ability.CompletionHandler.d.ts
+++ b/api/@ohos.app.ability.CompletionHandler.d.ts
@@ -20,6 +20,31 @@
 
 import { ElementName } from './bundleManager/ElementName';
 
+/**
+ * Notify the success result of startAbility.
+ *
+ * @typedef { function }
+ * @param { ElementName } elementName - Indicates the component to start.
+ * @param { string } message - Indicates the message of the request result.
+ * @syscap SystemCapability.Ability.AbilityRuntime.Core
+ * @stagemodelonly
+ * @since 20
+ * @arkts 1.2
+ */
+type OnRequestSuccessFn = (elementName: ElementName, message: string) => void;
+/**
+ * Notify the failure result of startAbility.
+ *
+ * @typedef { function }
+ * @param { ElementName } elementName - Indicates the component to start.
+ * @param { string } message - Indicates the message of the request result.
+ * @syscap SystemCapability.Ability.AbilityRuntime.Core
+ * @stagemodelonly
+ * @since 20
+ * @arkts 1.2
+ */
+type OnRequestFailureFn = (elementName: ElementName, message: string) => void;
+
 /**
  * CompletionHandler is a handler to handle the completion events of start ability.
  *
@@ -27,8 +52,9 @@ import { ElementName } from './bundleManager/ElementName';
  * @stagemodelonly
  * @atomicservice
  * @since 20
+ * @arkts 1.1&1.2
  */
-export default class CompletionHandler {
+declare class CompletionHandler {
   /**
    * Notify the success result of startAbility.
    *
@@ -52,4 +78,27 @@ export default class CompletionHandler {
    * @since 20
    */
   onRequestFailure(elementName: ElementName, message: string): void;
-}
\ No newline at end of file
+
+  /**
+   * Notify the success result of startAbility.
+   *
+   * @type { OnRequestSuccessFn }
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @stagemodelonly
+   * @since 20
+   * @arkts 1.2
+   */
+  onRequestSuccess: OnRequestSuccessFn;
+
+  /**
+   * Notify the failure result of startAbility.
+   *
+   * @type { OnRequestFailureFn }
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @stagemodelonly
+   * @since 20
+   * @arkts 1.2
+   */
+  onRequestFailure: OnRequestFailureFn;
+}
+export default CompletionHandler;
\ No newline at end of file
diff --git a/api/@ohos.app.ability.StartOptions.d.ts b/api/@ohos.app.ability.StartOptions.d.ts
index 07b51995b51eff0d532425c16e6f8a39584d3142..f634f021e4dfaa8d1ebafc3d79a7788a3cef041c 100644
--- a/api/@ohos.app.ability.StartOptions.d.ts
+++ b/api/@ohos.app.ability.StartOptions.d.ts
@@ -20,9 +20,7 @@
 import contextConstant from "./@ohos.app.ability.contextConstant";
 import image from "./@ohos.multimedia.image";
 import bundleManager from './@ohos.bundle.bundleManager';
-/*** if arkts 1.1 */
 import CompletionHandler from './@ohos.app.ability.CompletionHandler';
-/*** endif */
 
 /**
  * StartOptions is the basic communication component of the system.
@@ -253,6 +251,7 @@ export default class StartOptions {
    * @stagemodelonly
    * @atomicservice
    * @since 20
+   * @arkts 1.1&1.2
    */
   completionHandler?: CompletionHandler;