diff --git a/api/@ohos.distributedHardware.deviceManager.d.ts b/api/@ohos.distributedHardware.deviceManager.d.ts
index 646861dc96449ab663281565dc6864835c0ce093..7e219e3760c909780ddb320bcde1e9cf97364380 100644
--- a/api/@ohos.distributedHardware.deviceManager.d.ts
+++ b/api/@ohos.distributedHardware.deviceManager.d.ts
@@ -18,6 +18,8 @@ import { AsyncCallback, Callback } from './basic';
 declare namespace deviceManager {
   /**
    * DeviceInfo
+   *
+   * @systemapi this method can be used only by system applications.
    */
   interface DeviceInfo {
     /**
@@ -34,6 +36,11 @@ declare namespace deviceManager {
      * Device type of the device.
      */
     deviceType: DeviceType;
+
+    /**
+     * NetworkId of the device.
+     */
+    networkId: string;
   }
 
   /**
@@ -78,6 +85,8 @@ declare namespace deviceManager {
 
   /**
    * Device state change event definition
+   *
+   * @systemapi this method can be used only by system applications.
    */
   enum DeviceStateChangeAction {
     /**
@@ -242,16 +251,6 @@ declare namespace deviceManager {
      */
     authType: number;
 
-    /**
-     * App application Icon.
-     */
-    appIcon?: Uint8Array;
-
-    /**
-     * App application thumbnail.
-     */
-    appThumbnail?: Uint8Array;
-
     /**
      * Authentication extra infos.
      */
@@ -288,6 +287,7 @@ declare namespace deviceManager {
    *
    * @param bundleName Indicates the bundle name of the application.
    * @param callback Indicates the callback to be invoked upon {@code DeviceManager} instance creation.
+   * @systemapi this method can be used only by system applications.
    */
   function createDeviceManager(bundleName: string, callback: AsyncCallback<DeviceManager>): void;
 
@@ -297,6 +297,8 @@ declare namespace deviceManager {
   interface DeviceManager {
     /**
      * Releases the {@code DeviceManager} instance after the methods for device management are no longer used.
+     *
+     * @systemapi this method can be used only by system applications.
      */
     release(): void;
 
@@ -307,9 +309,52 @@ declare namespace deviceManager {
      * This parameter can be null. For details about available values, see {@link #TARGET_PACKAGE_NAME} and
      * {@link #SORT_TYPE}.
      * @return Returns a list of trusted devices.
+     * @systemapi this method can be used only by system applications.
      */
     getTrustedDeviceListSync(): Array<DeviceInfo>;
 
+    /**
+     * Obtains a list of trusted devices.
+     *
+     * @param callback Indicates the callback to be invoked upon getTrustedDeviceList
+     * @return Returns a list of trusted devices.
+     * @systemapi this method can be used only by system applications.
+     */
+    getTrustedDeviceList(callback:AsyncCallback<Array<DeviceInfo>>): void;
+
+    /**
+     * Obtains a list of trusted devices.
+     *
+     * @return Returns a list of trusted devices.
+     * @systemapi this method can be used only by system applications.
+     */
+    getTrustedDeviceList(): Promise<Array<DeviceInfo>>;
+
+    /**
+     * Obtains local device info
+     *
+     * @return Returns local device info.
+     * @systemapi this method can be used only by system applications.
+     */
+    getLocalDeviceInfoSync(): DeviceInfo;
+
+    /**
+     * Obtains local device info
+     *
+     * @param callback Indicates the callback to be invoked upon getLocalDeviceInfo
+     * @return Returns local device info.
+     * @systemapi this method can be used only by system applications.
+     */
+    getLocalDeviceInfo(callback:AsyncCallback<DeviceInfo>): void;
+
+    /**
+     * Obtains local device info
+     *
+     * @return Returns local device info.
+     * @systemapi this method can be used only by system applications.
+     */
+    getLocalDeviceInfo(): Promise<DeviceInfo>;
+
     /**
      * Start to discover device.
      *
@@ -330,12 +375,20 @@ declare namespace deviceManager {
      * Authenticate the specified device.
      *
      * @param deviceInfo deviceInfo of device to authenticate
-     * @param authparam authparam of device to authenticate
+     * @param authParam authParam of device to authenticate
      * @param callback Indicates the callback to be invoked upon authenticateDevice
      * @systemapi this method can be used only by system applications.
      */
     authenticateDevice(deviceInfo: DeviceInfo, authParam: AuthParam, callback: AsyncCallback<{deviceId: string, pinTone ?: number}>): void;
 
+    /**
+     * unAuthenticate the specified device.
+     *
+     * @param deviceInfo deviceInfo of device to unAuthenticate
+     * @systemapi this method can be used only by system applications.
+     */
+    unAuthenticateDevice(deviceInfo: DeviceInfo): void
+
      /**
      * verify auth info, such as pin code.
      *
@@ -345,13 +398,13 @@ declare namespace deviceManager {
      */
     verifyAuthInfo(authInfo: AuthInfo, callback: AsyncCallback<{deviceId: string, level: number}>): void;
 
-
     /**
      * Register a device state callback so that the application can be notified upon device state changes based on
      * the application bundle name.
      *
      * @param bundleName Indicates the bundle name of the application.
      * @param callback Indicates the device state callback to register.
+     * @systemapi this method can be used only by system applications.
      */
     on(type: 'deviceStateChange', callback: Callback<{ action: DeviceStateChangeAction, device: DeviceInfo }>): void;
 
@@ -360,6 +413,7 @@ declare namespace deviceManager {
      *
      * @param bundleName Indicates the bundle name of the application.
      * @param callback Indicates the device state callback to register.
+     * @systemapi this method can be used only by system applications.
      */
     off(type: 'deviceStateChange', callback?: Callback<{ action: DeviceStateChangeAction, device: DeviceInfo }>): void;