diff --git a/api/@ohos.telephony.data.d.ts b/api/@ohos.telephony.data.d.ts
index 5a74b8ae56f474675ca6309db9718d69b8a99f68..0238fd0b39a2b3c66c5fefcee8415669f8da8820 100644
--- a/api/@ohos.telephony.data.d.ts
+++ b/api/@ohos.telephony.data.d.ts
@@ -437,6 +437,17 @@ declare namespace data {
    */
   function queryAllApns(): Promise<Array<ApnInfo>>;
 
+  /**
+   * Get Active APN's Name.
+   *
+   * @permission ohos.permission.GET_NETWORK_INFO
+   * @returns { Promise<string> } Returns the name of the active APN or null if cellular network is not active.
+   * @throws { BusinessError } 201 - Permission denied.
+   * @syscap SystemCapability.Telephony.CellularData
+   * @since 20
+   */
+  function getActiveApnName(): Promise<string>;
+
   /**
    * Query APN IDs.
    *