diff --git a/api/@ohos.file.storageStatistics.d.ts b/api/@ohos.file.storageStatistics.d.ts
index 7d8cf858eb5476fb055b66d070211d0c8e662ec8..e98cebac0e81c2fcd52c244b27cbe87bacb352bc 100644
--- a/api/@ohos.file.storageStatistics.d.ts
+++ b/api/@ohos.file.storageStatistics.d.ts
@@ -221,6 +221,26 @@ parameters are left unspecified;
    */
   function getBundleStats(packageName: string, index?: number): Promise<BundleStats>;
 
+  /**
+   * @since 20
+   * @arkts 1.2
+   */
+  overload getCurrentBundleStats { GetCurrentBundleStatsWithCallback, GetCurrentBundleStatsReturnsPromise };
+
+  /**
+   * Get the current bundle statistics.
+   *
+   * @param { AsyncCallback<BundleStats> } callback - callback
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:Mandatory
+parameters are left unspecified;
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetCurrentBundleStatsWithCallback(callback: AsyncCallback<BundleStats>): void;
+
   /**
    * Get the current bundle statistics.
    *
@@ -244,8 +264,21 @@ parameters are left unspecified;
    * @throws { BusinessError } 13600001 - IPC error.
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
-   * @since arkts {'1.1':'9', '1.2':'20'}
-   * @arkts 1.1&1.2
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetCurrentBundleStatsReturnsPromise(): Promise<BundleStats>;
+
+  /**
+   * Get the current bundle statistics.
+   *
+   * @returns { Promise<BundleStats> } return Promise
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:Mandatory
+parameters are left unspecified;
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @since 9
    */
   function getCurrentBundleStats(): Promise<BundleStats>;
 
@@ -355,6 +388,36 @@ parameters are left unspecified;
     app: number;
   }
 
+  /**
+   * @since 20
+   * @arkts 1.2
+   */
+  overload getUserStorageStats {
+    GetUserStorageStatsReturnsPromise,
+    GetUserStorageStatsWithCallback,
+    GetUserStorageStatsWithUserIdReturnsPromise,
+    GetUserStorageStatsWithUserIdCallback
+  };
+
+  /**
+   * Get the user storage statistics.
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @returns { Promise<StorageStats> } return Promise
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:1.Mandatory
+parameters are left unspecified;
+   * <br>2.Incorrect parameter types.
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @systemapi
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetUserStorageStatsReturnsPromise(): Promise<StorageStats>;
+
   /**
    * Get the user storage statistics.
    *
@@ -388,8 +451,26 @@ parameters are left unspecified;
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
-   * @since arkts {'1.1':'9', '1.2':'20'}
-   * @arkts 1.1&1.2
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetUserStorageStatsWithCallback(callback: AsyncCallback<StorageStats>): void;
+
+  /**
+   * Get the user storage statistics.
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @param { AsyncCallback<StorageStats> } callback - callback
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:1.Mandatory
+parameters are left unspecified;
+   * <br>2.Incorrect parameter types.
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @systemapi
+   * @since 9
    */
   function getUserStorageStats(callback: AsyncCallback<StorageStats>): void;
 
@@ -409,8 +490,28 @@ parameters are left unspecified;
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
-   * @since arkts {'1.1':'9', '1.2':'20'}
-   * @arkts 1.1&1.2
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetUserStorageStatsWithUserIdReturnsPromise(userId: number): Promise<StorageStats>;
+
+  /**
+   * Get the user storage statistics.
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @param { long } userId - The id of the user
+   * @returns { Promise<StorageStats> } return Promise
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:1.Mandatory
+parameters are left unspecified;
+   * <br>2.Incorrect parameter types.
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13600009 - User if out of range.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @systemapi
+   * @since 9
    */
   function getUserStorageStats(userId: long): Promise<StorageStats>;
 
@@ -430,11 +531,51 @@ parameters are left unspecified;
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
-   * @since arkts {'1.1':'9', '1.2':'20'}
-   * @arkts 1.1&1.2
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetUserStorageStatsWithUserIdCallback(userId: number, callback: AsyncCallback<StorageStats>): void;
+
+  /**
+   * Get the user storage statistics.
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @param { long } userId - The id of the user
+   * @param { AsyncCallback<StorageStats> } callback - callback
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:1.Mandatory
+parameters are left unspecified;
+   * <br>2.Incorrect parameter types.
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13600009 - User if out of range.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @systemapi
+   * @since 9
    */
   function getUserStorageStats(userId: long, callback: AsyncCallback<StorageStats>): void;
 
+  /**
+   * @since 20
+   * @arkts 1.2
+   */
+  overload getTotalSize { GetTotalSizeWithCallback, GetTotalSizeReturnsPromise };
+
+  /**
+   * Get the total size.
+   *
+   * @param { AsyncCallback<number> } callback - callback
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:Mandatory
+parameters are left unspecified;
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetTotalSizeWithCallback(callback: AsyncCallback<number>): void;
+
   /**
    * Get the total size.
    *
@@ -464,6 +605,18 @@ parameters are left unspecified;
    */
   function getTotalSize(callback: AsyncCallback<long>): void;
 
+  /**
+   * Get the total size.
+   *
+   * @returns { Promise<number> } return Promise
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetTotalSizeReturnsPromise(): Promise<number>;
+
   /**
    * Get the total size.
    *
@@ -517,6 +670,26 @@ parameters are left unspecified;
    */
   function getTotalSizeSync(): number;
 
+  /**
+   * @since 20
+   * @arkts 1.2
+   */
+  overload getFreeSize { GetFreeSizeWithCallback, GetFreeSizeReturnsPromise };
+
+  /**
+   * Get the free size.
+   *
+   * @param { AsyncCallback<number> } callback - callback
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:Mandatory
+parameters are left unspecified;
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetFreeSizeWithCallback(callback: AsyncCallback<number>): void;
+
   /**
    * Get the free size.
    *
@@ -546,6 +719,18 @@ parameters are left unspecified;
    */
   function getFreeSize(callback: AsyncCallback<long>): void;
 
+  /**
+   * Get the free size.
+   *
+   * @returns { Promise<number> } return Promise
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetFreeSizeReturnsPromise(): Promise<number>;
+
   /**
    * Get the free size.
    *
diff --git a/api/@ohos.file.volumeManager.d.ts b/api/@ohos.file.volumeManager.d.ts
index 1b90ba7c3f8e84830c3161ba288037868bbb7ff5..05c41969fd0026f9a82c5aae63c9570f939baeef 100644
--- a/api/@ohos.file.volumeManager.d.ts
+++ b/api/@ohos.file.volumeManager.d.ts
@@ -122,6 +122,31 @@ declare namespace volumeManager {
      */
     fsType: string;
   }
+
+  /**
+   * @since 20
+   * @arkts 1.2
+   */
+  overload getAllVolumes { GetAllVolumesWithCallback, GetAllVolumesReturnsPromise };
+
+  /**
+   * Get All Volumes
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @param { AsyncCallback<Array<Volume>> } callback - callback
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:Mandatory
+parameters are left unspecified;
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.Volume
+   * @systemapi
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetAllVolumesWithCallback(callback: AsyncCallback<Array<Volume>>): void;
+
   /**
    * Get All Volumes
    *
@@ -153,8 +178,25 @@ parameters are left unspecified;
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.Volume
    * @systemapi
-   * @since arkts {'1.1':'9', '1.2':'20'}
-   * @arkts 1.1&1.2
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetAllVolumesReturnsPromise(): Promise<Array<Volume>>;
+
+  /**
+   * Get All Volumes
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @returns { Promise<Array<Volume>> } return Promise
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:Mandatory
+parameters are left unspecified;
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.Volume
+   * @systemapi
+   * @since 9
    */
   function getAllVolumes(): Promise<Array<Volume>>;
 
@@ -250,6 +292,33 @@ parameters are left unspecified;
    */
   function unmount(volumeId: string): Promise<void>;
 
+  /**
+   * @since 20
+   * @arkts 1.2
+   */
+  overload getVolumeByUuid { GetVolumeByUuidWithCallback, GetVolumeByUuidReturnsPromise };
+
+  /**
+   * Get the volume by uuid.
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @param { string } uuid - The uuid of volume
+   * @param { AsyncCallback<Volume> } callback - callback
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:1.Mandatory
+parameters are left unspecified;
+   * <br>2.Incorrect parameter types.
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13600008 - No such object.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.Volume
+   * @systemapi
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetVolumeByUuidWithCallback(uuid: string, callback: AsyncCallback<Volume>): void;
+
   /**
    * Get the volume by uuid.
    *
@@ -287,8 +356,28 @@ parameters are left unspecified;
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.Volume
    * @systemapi
-   * @since arkts {'1.1':'9', '1.2':'20'}
-   * @arkts 1.1&1.2
+   * @since 20
+   * @arkts 1.2
+   */
+  function GetVolumeByUuidReturnsPromise(uuid: string): Promise<Volume>;
+
+  /**
+   * Get the volume by uuid.
+   *
+   * @permission ohos.permission.STORAGE_MANAGER
+   * @param { string } uuid - The uuid of volume
+   * @returns { Promise<Volume> } return Promise
+   * @throws { BusinessError } 201 - Permission verification failed.
+   * @throws { BusinessError } 202 - The caller is not a system application.
+   * @throws { BusinessError } 401 - The input parameter is invalid.Possible causes:1.Mandatory
+parameters are left unspecified;
+   * <br>2.Incorrect parameter types.
+   * @throws { BusinessError } 13600001 - IPC error.
+   * @throws { BusinessError } 13600008 - No such object.
+   * @throws { BusinessError } 13900042 - Unknown error.
+   * @syscap SystemCapability.FileManagement.StorageService.Volume
+   * @systemapi
+   * @since 9
    */
   function getVolumeByUuid(uuid: string): Promise<Volume>;