diff --git a/api/application/AbilityDelegator.d.ts b/api/application/AbilityDelegator.d.ts
index 17dc00c762176f453e10055d840652f05bf5228b..789da6c66116ad0f8da26004939acf38a621d4cd 100644
--- a/api/application/AbilityDelegator.d.ts
+++ b/api/application/AbilityDelegator.d.ts
@@ -29,6 +29,14 @@ import { ShellCmdResult } from './shellCmdResult';
  * @syscap SystemCapability.Ability.AbilityRuntime.Core
  * @since 9
  */
+/**
+ * A global test utility interface used for adding AbilityMonitor objects and control lifecycle states of abilities.
+ *
+ * @interface AbilityDelegator
+ * @syscap SystemCapability.Ability.AbilityRuntime.Core
+ * @crossplatform
+ * @since 10
+ */
 export interface AbilityDelegator {
   /**
    * Add an AbilityMonitor object for monitoring the lifecycle state changes of the specified ability in this process.
diff --git a/api/application/AbilityMonitor.d.ts b/api/application/AbilityMonitor.d.ts
index 9717aad0ffdb9b6d39ddb9bf1e39d27e5af178fe..e1046cca856aaef2135cef90a244ed1e019f9d09 100644
--- a/api/application/AbilityMonitor.d.ts
+++ b/api/application/AbilityMonitor.d.ts
@@ -23,6 +23,15 @@ import UIAbility from '../@ohos.app.ability.UIAbility';
  * @syscap SystemCapability.Ability.AbilityRuntime.Core
  * @since 9
  */
+/**
+ * Provide methods for matching monitored Ability objects that meet specified conditions.
+ * The most recently matched Ability objects will be saved in the AbilityMonitor object.
+ *
+ * @interface AbilityMonitor
+ * @syscap SystemCapability.Ability.AbilityRuntime.Core
+ * @crossplatform
+ * @since 10
+ */
 export interface AbilityMonitor {
   /**
    * The name of the ability to monitor.
@@ -31,6 +40,14 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * The name of the ability to monitor.
+   *
+   * @type { string }
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   abilityName: string;
 
   /**
@@ -40,6 +57,14 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * The name of the module to monitor.
+   *
+   * @type { ?string }
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   moduleName?: string;
 
   /**
@@ -48,6 +73,13 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * Called back when the ability is created for initialization.
+   *
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   onAbilityCreate?: (ability: UIAbility) => void;
 
   /**
@@ -56,6 +88,13 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * Called back when the state of the ability changes to foreground.
+   *
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   onAbilityForeground?: (ability: UIAbility) => void;
 
   /**
@@ -64,6 +103,13 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * Called back when the state of the ability changes to background.
+   *
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   onAbilityBackground?: (ability: UIAbility) => void;
 
   /**
@@ -72,6 +118,13 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * Called back before the ability is destroyed.
+   *
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   onAbilityDestroy?: (ability: UIAbility) => void;
 
   /**
@@ -80,6 +133,13 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * Called back when an ability window stage is created.
+   *
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   onWindowStageCreate?: (ability: UIAbility) => void;
 
   /**
@@ -96,6 +156,13 @@ export interface AbilityMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * Called back when an ability window stage is destroyed.
+   *
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   onWindowStageDestroy?: (ability: UIAbility) => void;
 }
 
diff --git a/api/application/AbilityStageMonitor.d.ts b/api/application/AbilityStageMonitor.d.ts
index 987abee8d45d40fa5790f8374655a76e854ea927..0ef1d30920129b94e3668c7092ef9ccb9c1a6149 100644
--- a/api/application/AbilityStageMonitor.d.ts
+++ b/api/application/AbilityStageMonitor.d.ts
@@ -21,6 +21,15 @@
  * @syscap SystemCapability.Ability.AbilityRuntime.Core
  * @since 9
  */
+/**
+ * Provide methods for matching monitored AbilityStage objects that meet specified conditions.
+ * The most recently matched AbilityStage objects will be saved in the AbilityStageMonitor object.
+ *
+ * @typedef AbilityStageMonitor
+ * @syscap SystemCapability.Ability.AbilityRuntime.Core
+ * @crossplatform
+ * @since 10
+ */
 export interface AbilityStageMonitor {
   /**
    * The module name of the abilityStage to monitor.
@@ -29,6 +38,14 @@ export interface AbilityStageMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * The module name of the abilityStage to monitor.
+   *
+   * @type { string }
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   moduleName: string;
 
   /**
@@ -38,6 +55,14 @@ export interface AbilityStageMonitor {
    * @syscap SystemCapability.Ability.AbilityRuntime.Core
    * @since 9
    */
+  /**
+   * The source path of the abilityStage to monitor.
+   *
+   * @type { string }
+   * @syscap SystemCapability.Ability.AbilityRuntime.Core
+   * @crossplatform
+   * @since 10
+   */
   srcEntrance: string;
 }