diff --git a/api/@ohos.app.ability.appManager.d.ts b/api/@ohos.app.ability.appManager.d.ts
index 026423f30843dc3efd49dd66342aff6523f472e4..3b2a77b98b6470622642b62f2c097ca6fc50cb84 100644
--- a/api/@ohos.app.ability.appManager.d.ts
+++ b/api/@ohos.app.ability.appManager.d.ts
@@ -652,7 +652,7 @@ declare namespace appManager {
    * @permission ohos.permission.KILL_APP_PROCESSES or ohos.permission.CLEAN_BACKGROUND_PROCESSES
    * @param { string } bundleName - bundle name.
    * @param { boolean } clearPageStack - The flag that indicates whether the page stack need to be cleared.
-   * @param { number } [appIndex] - The application index.
+   * @param { number } [appIndex] - The index of clone app.
    * @returns { Promise<void> } The promise returned by the function.
    * @throws { BusinessError } 201 - Permission denied.
    * @throws { BusinessError } 401 - If the input parameter is not valid parameter.