diff --git a/api/@ohos.file.storageStatistics.d.ts b/api/@ohos.file.storageStatistics.d.ts
index 04b5758c20f81cbc7bdef5cd0c85131c5a11855f..280a48797e82977d287228caf1fddfad93e9ce71 100644
--- a/api/@ohos.file.storageStatistics.d.ts
+++ b/api/@ohos.file.storageStatistics.d.ts
@@ -34,7 +34,7 @@ declare namespace storageStatistics {
    *
    * @permission ohos.permission.STORAGE_MANAGER
    * @param { string } volumeUuid - The uuid of the volume
-   * @param { AsyncCallback<number> } callback - callback
+   * @param { AsyncCallback<long> } 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
@@ -46,15 +46,16 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 8 dynamic
+   * @since 20 static
    */
-  function getTotalSizeOfVolume(volumeUuid: string, callback: AsyncCallback<number>): void;
+  function getTotalSizeOfVolume(volumeUuid: string, callback: AsyncCallback<long>): void;
 
   /**
    * Get the total size of volume.
    *
    * @permission ohos.permission.STORAGE_MANAGER
    * @param { string } volumeUuid - The uuid of the volume
-   * @returns { Promise<number> } return Promise
+   * @returns { Promise<long> } 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
@@ -66,14 +67,15 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 8 dynamic
+   * @since 20 static
    */
-  function getTotalSizeOfVolume(volumeUuid: string): Promise<number>;
+  function getTotalSizeOfVolume(volumeUuid: string): Promise<long>;
   /**
    * Get the free size of volume.
    *
    * @permission ohos.permission.STORAGE_MANAGER
    * @param { string } volumeUuid - The uuid of the volume
-   * @param { AsyncCallback<number> } callback - callback
+   * @param { AsyncCallback<long> } 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
@@ -85,15 +87,16 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 8 dynamic
+   * @since 20 static
    */
-  function getFreeSizeOfVolume(volumeUuid: string, callback: AsyncCallback<number>): void;
+  function getFreeSizeOfVolume(volumeUuid: string, callback: AsyncCallback<long>): void;
 
   /**
    * Get the free size of volume.
    *
    * @permission ohos.permission.STORAGE_MANAGER
    * @param { string } volumeUuid - The uuid of the volume
-   * @returns { Promise<number> } return Promise
+   * @returns { Promise<long> } 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
@@ -105,8 +108,9 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 8 dynamic
+   * @since 20 static
    */
-  function getFreeSizeOfVolume(volumeUuid: string): Promise<number>;
+  function getFreeSizeOfVolume(volumeUuid: string): Promise<long>;
 
   /**
    * Get the bundle statistics.
@@ -171,7 +175,7 @@ parameters are left unspecified;
    * @permission ohos.permission.STORAGE_MANAGER
    * @param { string } packageName - The name of the application
    * @param { AsyncCallback<BundleStats> } callback - callback
-   * @param { number } index - The index number of the clone application, the default value is 0.
+   * @param { int } index - The index number of the clone application, the default value is 0.
    * @throws { BusinessError } 201 - Permission verification failed.
    * @throws { BusinessError } 202 - The caller is not a system application.
    * @throws { BusinessError } 401 - The input parameter is invalid.
@@ -181,8 +185,9 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 12 dynamic
+   * @since 20 static
    */
-  function getBundleStats(packageName: string, callback: AsyncCallback<BundleStats>, index?: number): void;
+  function getBundleStats(packageName: string, callback: AsyncCallback<BundleStats>, index?: int): void;
 
   /**
    * Get the bundle statistics.
@@ -207,7 +212,7 @@ parameters are left unspecified;
    *
    * @permission ohos.permission.STORAGE_MANAGER
    * @param { string } packageName - The name of the application
-   * @param { number } index - The index number of the clone application, the default value is 0.
+   * @param { int } index - The index number of the clone application, the default value is 0.
    * @returns { Promise<BundleStats> } return Promise
    * @throws { BusinessError } 201 - Permission verification failed.
    * @throws { BusinessError } 202 - The caller is not a system application.
@@ -218,8 +223,9 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 12 dynamic
+   * @since 20 static
    */
-  function getBundleStats(packageName: string, index?: number): Promise<BundleStats>;
+  function getBundleStats(packageName: string, index?: int): Promise<BundleStats>;
 
   /**
    * Get the current bundle statistics.
@@ -253,7 +259,7 @@ parameters are left unspecified;
    * Get the system size.
    *
    * @permission ohos.permission.STORAGE_MANAGER
-   * @param { AsyncCallback<number> } callback - callback
+   * @param { AsyncCallback<long> } 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
@@ -263,14 +269,15 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 9 dynamic
+   * @since 20 static
    */
-  function getSystemSize(callback: AsyncCallback<number>): void;
+  function getSystemSize(callback: AsyncCallback<long>): void;
 
   /**
    * Get the system size.
    *
    * @permission ohos.permission.STORAGE_MANAGER
-   * @returns { Promise<number> } return Promise
+   * @returns { Promise<long> } 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
@@ -280,8 +287,9 @@ parameters are left unspecified;
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @systemapi
    * @since 9 dynamic
+   * @since 20 static
    */
-  function getSystemSize(): Promise<number>;
+  function getSystemSize(): Promise<long>;
 
   /**
    * Get the user storage statistics.
@@ -509,13 +517,14 @@ parameters are left unspecified;
   /**
    * Get the total size with sync interface
    *
-   * @returns { number } return the total size
+   * @returns { long } return the total size
    * @throws { BusinessError } 13600001 - IPC error.
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @since 15 dynamic
+   * @since 20 static
    */
-  function getTotalSizeSync(): number;
+  function getTotalSizeSync(): long;
 
   /**
    * Get the free size.
@@ -591,13 +600,14 @@ parameters are left unspecified;
   /**
    * Get the free size with sync interface.
    *
-   * @returns { number } return the free size
+   * @returns { long } return the free size
    * @throws { BusinessError } 13600001 - IPC error.
    * @throws { BusinessError } 13900042 - Unknown error.
    * @syscap SystemCapability.FileManagement.StorageService.SpatialStatistics
    * @since 15 dynamic
+   * @since 20 static
    */
-  function getFreeSizeSync(): number;
+  function getFreeSizeSync(): long;
 }
 
 export default storageStatistics;