diff --git a/api/@ohos.bluetooth.d.ts b/api/@ohos.bluetooth.d.ts
index b3dde1d0f94f8727c4ddc8530bf3bf44bc8dfdf8..38e7044b419687b8c9cff20d0c70fc809787a041 100644
--- a/api/@ohos.bluetooth.d.ts
+++ b/api/@ohos.bluetooth.d.ts
@@ -18,19 +18,20 @@ import { AsyncCallback, Callback } from "./basic";
 /**
  * Provides methods to operate or manage Bluetooth.
  * @since 7
+ * @import import bluetooth frome '@ohos.bluetooth';
  * @syscap SystemCapability.Communication.Bluetooth.Core
  */
 declare namespace bluetooth {
-  /**
-   * Obtains the Bluetooth status of a device.
-   *
-   * @return Returns the Bluetooth status, which can be {@link BluetoothState#STATE_OFF},
-   * {@link BluetoothState#STATE_TURNING_ON}, {@link BluetoothState#STATE_ON}, {@link BluetoothState#STATE_TURNING_OFF},
-   * {@link BluetoothState#STATE_BLE_TURNING_ON}, {@link BluetoothState#STATE_BLE_ON},
-   * or {@link BluetoothState#STATE_BLE_TURNING_OFF}.
-   * @since 7
-   * @permission ohos.permission.USE_BLUETOOTH
-   */
+    /**
+     * Obtains the Bluetooth status of a device.
+     *
+     * @return Returns the Bluetooth status, which can be {@link BluetoothState#STATE_OFF},
+     * {@link BluetoothState#STATE_TURNING_ON}, {@link BluetoothState#STATE_ON}, {@link BluetoothState#STATE_TURNING_OFF},
+     * {@link BluetoothState#STATE_BLE_TURNING_ON}, {@link BluetoothState#STATE_BLE_ON},
+     * or {@link BluetoothState#STATE_BLE_TURNING_OFF}.
+     * @since 7
+     * @permission ohos.permission.USE_BLUETOOTH
+     */
     function getState(): BluetoothState;
 
     /**
@@ -359,24 +360,24 @@ declare namespace bluetooth {
      * Base interface of profile.
      */
     interface BaseProfile {
-      /**
-       * Obtains the connected devices list of profile.
-       *
-       * @return Returns the address of connected devices list.
-       * @since 8
-       * @permission ohos.permission.USE_BLUETOOTH
-       */
-      getConnectionDevices(): Array<string>;
-
-      /**
-       * Obtains the profile state of device.
-       *
-       * @param device The address of bluetooth device.
-       * @return Returns {@link ProfileConnectionState} of device.
-       * @since 8
-       * @permission ohos.permission.USE_BLUETOOTH
-       */
-      getDeviceState(device: string): ProfileConnectionState;
+        /**
+         * Obtains the connected devices list of profile.
+         *
+         * @return Returns the address of connected devices list.
+         * @since 8
+         * @permission ohos.permission.USE_BLUETOOTH
+         */
+        getConnectionDevices(): Array<string>;
+
+        /**
+         * Obtains the profile state of device.
+         *
+         * @param device The address of bluetooth device.
+         * @return Returns {@link ProfileConnectionState} of device.
+         * @since 8
+         * @permission ohos.permission.USE_BLUETOOTH
+         */
+        getDeviceState(device: string): ProfileConnectionState;
     }
 
     /**
@@ -384,23 +385,23 @@ declare namespace bluetooth {
      */
     interface A2dpSourceProfile extends BaseProfile {
         /**
-	 * Connect to device with a2dp.
-	 *
-	 * @param device The address of the remote device to connect.
-	 * @return Returns {@code true} if the connect is in process; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
+         * Connect to device with a2dp.
+         *
+         * @param device The address of the remote device to connect.
+         * @return Returns {@code true} if the connect is in process; returns {@code false} otherwise.
+         * @since 8
+         * @permission permission ohos.permission.DISCOVER_BLUETOOTH
+         */
         connect(device: string): boolean;
 
         /**
-	 * Disconnect to device with a2dp.
-	 *
-	 * @param device The address of the remote device to disconnect.
-	 * @return Returns {@code true} if the disconnect is in process; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
+         * Disconnect to device with a2dp.
+         *
+         * @param device The address of the remote device to disconnect.
+         * @return Returns {@code true} if the disconnect is in process; returns {@code false} otherwise.
+         * @since 8
+         * @permission permission ohos.permission.DISCOVER_BLUETOOTH
+         */
         disconnect(device: string): boolean;
 
         /**
@@ -422,12 +423,12 @@ declare namespace bluetooth {
         off(type: "connectionStateChange", callback?: Callback<StateChangeParam>): void;
 
         /**
-	 * Obtains the playing state of device.
-	 *
-	 * @param device The address of the remote device.
-	 * @return Returns {@link PlayingState} of the remote device.
-	 *
-	 */
+         * Obtains the playing state of device.
+         *
+         * @param device The address of the remote device.
+         * @return Returns {@link PlayingState} of the remote device.
+         *
+         */
         getPlayingState(device: string): PlayingState;
     }
 
@@ -436,110 +437,42 @@ declare namespace bluetooth {
      */
     interface HandsFreeAudioGatewayProfile extends BaseProfile {
         /**
-	 * Connect to device with hfp.
-	 *
-	 * @param device The address of the remote device to connect.
-	 * @return Returns {@code true} if the connect is in process; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
-        connect(device: string): boolean;
-
-        /**
-	 * Disconnect to device with hfp.
-	 *
-	 * @param device The address of the remote device to disconnect.
-	 * @return Returns {@code true} if the disconnect is in process; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
-        disconnect(device: string): boolean;
-
-        /**
-	 * Obtains the sco state of device.
-	 *
-	 * @param device The address of the remote device.
-	 * @return Returns {@code true} if the disconnect is in process; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.USE_BLUETOOTH
-	 */
-        getScoState(device: string): number;
-
-        /**
-	 * Create audio channel.
-	 *
-	 * @param device The address of the remote device.
-	 * @return Returns {@code true} if the request is in process; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
-        connectSco(device: string): boolean;
-
-        /**
-	 * Close audio channel.
-	 *
-	 * @param device The address of the remote device.
-	 * @return Returns {@code true} if the request is in process; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
-        disconnectSco(device: string): boolean;
-
-        /**
-         * Subscribe the event reported when the profile connection state changes .
+         * Connect to device with hfp.
          *
-         * @param type Type of the profile connection state changes event to listen for .
-         * @param callback Callback used to listen for event.
+         * @param device The address of the remote device to connect.
+         * @return Returns {@code true} if the connect is in process; returns {@code false} otherwise.
          * @since 8
+         * @permission permission ohos.permission.DISCOVER_BLUETOOTH
          */
-        on(type: "connectionStateChange", callback: Callback<StateChangeParam>): void;
+        connect(device: string): boolean;
 
         /**
-         * Unsubscribe the event reported when the profile connection state changes .
+         * Disconnect to device with hfp.
          *
-         * @param type Type of the profile connection state changes event to listen for .
-         * @param callback Callback used to listen for event.
+         * @param device The address of the remote device to disconnect.
+         * @return Returns {@code true} if the disconnect is in process; returns {@code false} otherwise.
          * @since 8
+         * @permission permission ohos.permission.DISCOVER_BLUETOOTH
          */
-        off(type: "connectionStateChange", callback?: Callback<StateChangeParam>): void;
+        disconnect(device: string): boolean;
 
         /**
-         * Subscribe the event reported when the sco state changes .
+         * Subscribe the event reported when the profile connection state changes .
          *
          * @param type Type of the profile connection state changes event to listen for .
          * @param callback Callback used to listen for event.
          * @since 8
          */
-        on(type: "scoStateChange", callback: Callback<ScoStateParam>): void;
+        on(type: "connectionStateChange", callback: Callback<StateChangeParam>): void;
 
         /**
-         * Unsubscribe the event reported when the sco state changes .
+         * Unsubscribe the event reported when the profile connection state changes .
          *
          * @param type Type of the profile connection state changes event to listen for .
          * @param callback Callback used to listen for event.
          * @since 8
          */
-        off(type: "scoStateChange", callback?: Callback<ScoStateParam>): void;
-
-        /**
-	 * Open voice recognition function.
-	 *
-	 * @param device The address of the remote device to disconnect.
-	 * @return Returns {@code true} if success; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
-        openVoiceRecognition(device: string): boolean;
-
-        /**
-	 * Close voice recognition function.
-	 *
-	 * @param device The address of the remote device to disconnect.
-	 * @return Returns {@code true} if success; returns {@code false} otherwise.
-	 * @since 8
-	 * @permission permission ohos.permission.DISCOVER_BLUETOOTH
-	 */
-        closeVoiceRecognition(device: string): boolean;
+        off(type: "connectionStateChange", callback?: Callback<StateChangeParam>): void;
     }
 
     namespace BLE {
@@ -617,7 +550,6 @@ declare namespace bluetooth {
      * Manages GATT server. Before calling an Gatt server method, you must use {@link createGattServer} to create an GattServer instance.
      */
     interface GattServer {
-
         /**
          * Starts BLE advertising.
          *
@@ -987,9 +919,9 @@ declare namespace bluetooth {
         /** The UUID of the {@link GattService} instance to which the characteristic belongs */
         serviceUuid: string;
         /** The UUID of a BLECharacteristic instance */
-         characteristicUuid: string;
+        characteristicUuid: string;
         /** The value of a BLECharacteristic instance */
-         characteristicValue: ArrayBuffer;
+        characteristicValue: ArrayBuffer;
         /** The list of {@link BLEDescriptor} contained in the characteristic */
         descriptors: Array<BLEDescriptor>;
     }
@@ -1522,23 +1454,10 @@ declare namespace bluetooth {
         /** The address of device */
         deviceId: string;
 
-	/** Profile state value */
+        /** Profile state value */
         state: ProfileConnectionState;
     }
 
-    /**
-     * Sco state change parameters.
-     *
-     * @since 8
-     */
-    Interface ScoStateParam {
-        /** The address of device */
-        deviceId: string,
-
-        /** Sco state value */
-        state: ScoState
-    }
-
     /**
      * The enum of a2dp playing state.
      *
@@ -1549,26 +1468,14 @@ declare namespace bluetooth {
         STATE_PLAYING,
     }
 
-    /**
-     * The enum of sco audio state.
-     *
-     * @since 8
-     */
-    enum ScoState {
-        SCO_DISCONNECTED,
-        SCO_CONNECTING,
-        SCO_DISCONNECTING,
-        SCO_CONNECTED
-    }
-
     /**
      * The enum of profile id.
      *
      * @since 8
      */
     enum ProfileId {
-	PROFILE_A2DP_SOURCE = 1,
-	PROFILE_HANDS_FREE_AUDIO_GATEWAY = 4,
+        PROFILE_A2DP_SOURCE = 1,
+        PROFILE_HANDS_FREE_AUDIO_GATEWAY = 4,
     }
 }