diff --git a/distributedhardware/device_manager/include/oh_device_manager.h b/distributedhardware/device_manager/include/oh_device_manager.h
index 51d7a86c4..792c20194 100644
--- a/distributedhardware/device_manager/include/oh_device_manager.h
+++ b/distributedhardware/device_manager/include/oh_device_manager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Copyright (c) 2025-2026 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -40,6 +40,31 @@
 
 #ifdef __cplusplus
 extern "C" {
+/**
+  * @brief Obtains the display name of the local device.
+  * The device display name involves user privacy.
+  * You need to provide a privacy statement to declare the purpose of the device display name.
+  *
+  * @permission ohos.permission.READ_LOCAL_DEVICE_NAME
+  * @param localDeviceName Pointer to the display name of the local device.
+  *     After using this API, you need to manually release resources to free up space.
+  *     If the application has the ohos.permission.READ_LOCAL_DEVICE_NAME permission,
+  *     the device display name is returned.
+  *     Otherwise, the default device name is returned.
+  * @param len Character length of the display name of the local device.
+  * @return Error code. For details about the error code definitions, see {@link DeviceManager_ErrorCode}.
+  *      Returns {@link ERR_OK} is returned if the execution is successful.
+  *      Returns {@link DM_ERR_FAILED} is returned if the function fails to be executed.
+  *      Returns {@link DM_ERR_OBTAIN_SERVICE} is returned if the device management service fails to be obtained.
+  *      Returns {@link DM_ERR_OBTAIN_BUNDLE_NAME} is returned if the bundle name fails to be obtained.
+  *      Returns {@link ERR_INVALID_PARAMETER} is returned if the localDeviceName is nullptr or
+  *                                            *localDeviceName is not nullptr.
+  * @since 20
+  * @deprecated since 26.0.0
+  * @useinstead OH_DeviceManager_GetLocalDeviceNameC
+  */
+int32_t OH_DeviceManager_GetLocalDeviceName(char **localDeviceName, unsigned int &len);
+
 #endif
 
 /**
@@ -53,17 +78,18 @@ extern "C" {
   *     If the application has the ohos.permission.READ_LOCAL_DEVICE_NAME permission,
   *     the device display name is returned.
   *     Otherwise, the default device name is returned.
-  * @param len Length of the display name of the local device.
+  * @param len Pointer to the length of the display name of the local device.
+  *     After using this API, you need to manually release resources to free up space.
   * @return Error code. For details about the error code definitions, see {@link DeviceManager_ErrorCode}.
   *      Returns {@link ERR_OK} is returned if the execution is successful.
   *      Returns {@link DM_ERR_FAILED} is returned if the function fails to be executed.
   *      Returns {@link DM_ERR_OBTAIN_SERVICE} is returned if the device management service fails to be obtained.
   *      Returns {@link DM_ERR_OBTAIN_BUNDLE_NAME} is returned if the bundle name fails to be obtained.
   *      Returns {@link ERR_INVALID_PARAMETER} is returned if the localDeviceName is nullptr or
-  *                                            *localDeviceName is not nullptr.
-  * @since 20
+  *                                            *localDeviceName is not nullptr or len is nullptr.
+  * @since 26.0.0
   */
-int32_t OH_DeviceManager_GetLocalDeviceName(char **localDeviceName, unsigned int &len);
+int32_t OH_DeviceManager_GetLocalDeviceNameC(char **localDeviceName, unsigned int *len);
 
 #ifdef __cplusplus
 };
diff --git a/distributedhardware/device_manager/libdevicemanager.ndk.json b/distributedhardware/device_manager/libdevicemanager.ndk.json
index b77563c5d..8d30fe5c0 100644
--- a/distributedhardware/device_manager/libdevicemanager.ndk.json
+++ b/distributedhardware/device_manager/libdevicemanager.ndk.json
@@ -2,5 +2,9 @@
     {
         "first_introduced": "20",
         "name": "OH_DeviceManager_GetLocalDeviceName"
+    },
+    {
+        "first_introduced": "26.0.0",
+        "name": "OH_DeviceManager_GetLocalDeviceNameC"
     }
-]
\ No newline at end of file
+]