diff --git a/api/@ohos.volumeManager.d.ts b/api/@ohos.volumeManager.d.ts
index d12b057ec48421aa736c88c294245319d44a4b8a..e688a031beb4e279c4534365ae36620de5e82b79 100644
--- a/api/@ohos.volumeManager.d.ts
+++ b/api/@ohos.volumeManager.d.ts
@@ -38,6 +38,12 @@ declare namespace volumeManager {
   state: number;
   path: string;
 }
+/**
+   * Get All Volumes
+   * 
+   * @since 9
+   * @systemapi
+   */
 function getAllVolumes(callback: AsyncCallback<Array<Volume>>): void;
 function getAllVolumes(): Promise<Array<Volume>>;