diff --git a/api/@ohos.app.ability.ServiceExtensionAbility.d.ts b/api/@ohos.app.ability.ServiceExtensionAbility.d.ts
index b4659fb1eceac0d7f478c636804e4c2c7dfe81a4..0d678b9f424a7118b6f4df8de7b7f9f99ff24f80 100644
--- a/api/@ohos.app.ability.ServiceExtensionAbility.d.ts
+++ b/api/@ohos.app.ability.ServiceExtensionAbility.d.ts
@@ -123,7 +123,8 @@ declare class ServiceExtensionAbility {
   onDisconnect(want: Want): void;
 
   /**
-   * Called back when all abilities connected to a service extension are disconnected.
+   * Asynchronous callback when all abilities connected to a service extension are disconnected.
+   * The next lifecycle callback onDestroy() will be triggered when the returned Promise object resolves.
    *
    * @param { Want } want - Indicates disconnection information about the service extension.
    * @returns { Promise<void> } the promise returned by the function.