diff --git a/zh-cn/application-dev/reference/apis/js-apis-usbManager.md b/zh-cn/application-dev/reference/apis/js-apis-usbManager.md
index 0e82c7c56202da3b9a0aa1b8c991f825cb9df749..f9a5fca06c1c7d878105b1eccc33cea77d51f8ad 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-usbManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-usbManager.md
@@ -8,7 +8,7 @@
 
 ## 导入模块
 
-```js
+```ts
 import usb from "@ohos.usbManager";
 ```
 
@@ -28,8 +28,9 @@ getDevices(): Array<Readonly<USBDevice>>
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+/*
+let devicesList: Array<USBDevice> = usb.getDevices();
 console.log(`devicesList = ${devicesList}`);
 //devicesList  返回的数据结构
 //此处提供一个简单的示例，如下
@@ -81,6 +82,7 @@ console.log(`devicesList = ${devicesList}`);
     ],
   },
 ]
+*/
 ```
 
 ## usb.connectDevice
@@ -115,15 +117,15 @@ connectDevice(device: USBDevice): Readonly&lt;USBDevicePipe&gt;
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
-let device = devicesList[0];
+let device: USBDevice = devicesList[0];
 usb.requestRight(device.name);
-let devicepipe = usb.connectDevice(device);
+let devicepipe: USBDevicePipe = usb.connectDevice(device);
 console.log(`devicepipe = ${devicepipe}`);
 ```
 
@@ -151,10 +153,10 @@ hasRight(deviceName: string): boolean
 
 **示例：**
 
-```js
-let devicesName = "1-1";
-let bool = usb.hasRight(devicesName);
-console.log(`${bool}`);
+```ts
+let devicesName: string = "1-1";
+let right: boolean = usb.hasRight(devicesName);
+console.log(`${right}`);
 ```
 
 ## usb.requestRight
@@ -179,9 +181,9 @@ requestRight(deviceName: string): Promise&lt;boolean&gt;
 
 **示例：**
 
-```js
-let devicesName = "1-1";
-usb.requestRight(devicesName).then((ret) => {
+```ts
+let devicesName: string = "1-1";
+usb.requestRight(devicesName:).then((ret: number) => {
   console.log(`requestRight = ${ret}`);
 });
 ```
@@ -208,8 +210,8 @@ removeRight(deviceName: string): boolean
 
 **示例：**
 
-```js
-let devicesName = "1-1";
+```ts
+let devicesName: string = "1-1";
 if (usb.removeRight(devicesName)) {
   console.log(`Succeed in removing right`);
 }
@@ -242,9 +244,9 @@ addRight(bundleName: string, deviceName: string): boolean
 
 **示例：**
 
-```js
-let devicesName = "1-1";
-let bundleName = "com.example.hello";
+```ts
+let devicesName: string = "1-1";
+let bundleName: string = "com.example.hello";
 if (usb.addRight(bundleName, devicesName)) {
   console.log(`Succeed in adding right`);
 }
@@ -276,17 +278,17 @@ claimInterface(pipe: USBDevicePipe, iface: USBInterface, force ?: boolean): numb
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
-let device = devicesList[0];
+let device: USBDevice = devicesList[0];
 usb.requestRight(device.name);
-let devicepipe = usb.connectDevice(device);
-let interfaces = device.configs[0].interfaces[0];
-let ret = usb.claimInterface(devicepipe, interfaces);
+let devicepipe: USBDevicePipe = usb.connectDevice(device);
+let interfaces: USBInterface = device.configs[0].interfaces[0];
+let ret: number= usb.claimInterface(devicepipe, interfaces);
 console.log(`claimInterface = ${ret}`);
 ```
 
@@ -315,17 +317,17 @@ releaseInterface(pipe: USBDevicePipe, iface: USBInterface): number
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
-let device = devicesList[0];
+let device: USBDevice = devicesList[0];
 usb.requestRight(device.name);
-let devicepipe = usb.connectDevice(device);
-let interfaces = device.configs[0].interfaces[0];
-let ret = usb.claimInterface(devicepipe, interfaces);
+let devicepipe: USBDevicePipe = usb.connectDevice(device);
+let interfaces: USBInterface = device.configs[0].interfaces[0];
+let ret: number = usb.claimInterface(devicepipe, interfaces);
 ret = usb.releaseInterface(devicepipe, interfaces);
 console.log(`releaseInterface = ${ret}`);
 ```
@@ -355,17 +357,17 @@ setConfiguration(pipe: USBDevicePipe, config: USBConfiguration): number
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
-let device = devicesList[0];
+let device: USBDevice = devicesList[0];
 usb.requestRight(device.name);
-let devicepipe = usb.connectDevice(device);
-let config = device.configs[0];
-let ret = usb.setConfiguration(devicepipe, config);
+let devicepipe: USBDevicePipe = usb.connectDevice(device);
+let config: USBConfiguration = device.configs[0];
+let ret: number= usb.setConfiguration(devicepipe, config);
 console.log(`setConfiguration = ${ret}`);
 ```
 
@@ -394,17 +396,17 @@ setInterface(pipe: USBDevicePipe, iface: USBInterface): number
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
-let device = devicesList[0];
+let device: USBDevice = devicesList[0];
 usb.requestRight(device.name);
-let devicepipe = usb.connectDevice(device);
-let interfaces = device.configs[0].interfaces[0];
-let ret = usb.claimInterface(devicepipe, interfaces);
+let devicepipe: USBDevicePipe = usb.connectDevice(device);
+let interfaces: USBInterface = device.configs[0].interfaces[0];
+let ret: number = usb.claimInterface(devicepipe, interfaces);
 ret = usb.setInterface(devicepipe, interfaces);
 console.log(`setInterface = ${ret}`);
 ```
@@ -433,15 +435,15 @@ getRawDescriptor(pipe: USBDevicePipe): Uint8Array
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
 usb.requestRight(devicesList[0].name);
-let devicepipe = usb.connectDevice(devicesList[0]);
-let ret = usb.getRawDescriptor(devicepipe);
+let devicepipe: USBDevicePipe = usb.connectDevice(devicesList[0]);
+let ret: number = usb.getRawDescriptor(devicepipe);
 ```
 
 ## usb.getFileDescriptor
@@ -468,15 +470,15 @@ getFileDescriptor(pipe: USBDevicePipe): number
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
 usb.requestRight(devicesList[0].name);
-let devicepipe = usb.connectDevice(devicesList[0]);
-let ret = usb.getFileDescriptor(devicepipe);
+let devicepipe: USBDevicePipe = usb.connectDevice(devicesList[0]);
+let ret: number = usb.getFileDescriptor(devicepipe);
 ```
 
 ## usb.controlTransfer
@@ -505,8 +507,8 @@ controlTransfer(pipe: USBDevicePipe, controlparam: USBControlParams, timeout ?:
 
 **示例：**
 
-```js
-let param = {
+```ts
+let param: number = {
   request: 0,
   reqType: 0,
   target:0,
@@ -515,14 +517,14 @@ let param = {
   data: null
 };
 
-let devicesList = usb.getDevices();
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
 usb.requestRight(devicesList[0].name);
-let devicepipe = usb.connectDevice(devicesList[0]);
-usb.controlTransfer(devicepipe, param).then((ret) => {
+let devicepipe: USBDevicePipe = usb.connectDevice(devicesList[0]);
+usb.controlTransfer(devicepipe, param).then((ret: number) => {
  console.log(`controlTransfer = ${ret}`);
 })
 ```
@@ -554,24 +556,24 @@ bulkTransfer(pipe: USBDevicePipe, endpoint: USBEndpoint, buffer: Uint8Array, tim
 
 **示例：**
 
-```js
+```ts
 //usb.getDevices 接口返回数据集合，取其中一个设备对象，并获取权限 。
 //把获取到的设备对象作为参数传入usb.connectDevice;当usb.connectDevice接口成功返回之后；
 //才可以调用第三个接口usb.claimInterface.当usb.claimInterface 调用成功以后,再调用该接口。
-let devicesList = usb.getDevices();
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
-let device = devicesList[0];
+let device: USBDevice = devicesList[0];
 usb.requestRight(device.name);
 
-let devicepipe = usb.connectDevice(device);
-let interfaces = device.configs[0].interfaces[0];
-let endpoint = device.configs[0].interfaces[0].endpoints[0];
-let ret = usb.claimInterface(devicepipe, interfaces);
+let devicepipe: USBDevicePipe = usb.connectDevice(device);
+let interfaces: USBInterface = device.configs[0].interfaces[0];
+let endpoint: USBEndpoint = device.configs[0].interfaces[0].endpoints[0];
+let ret: number = usb.claimInterface(devicepipe, interfaces);
 let buffer =  new Uint8Array(128);
-usb.bulkTransfer(devicepipe, endpoint, buffer).then((ret) => {
+usb.bulkTransfer(devicepipe, endpoint, buffer).then((ret: number) => {
   console.log(`bulkTransfer = ${ret}`);
 });
 ```
@@ -600,15 +602,15 @@ closePipe(pipe: USBDevicePipe): number
 
 **示例：**
 
-```js
-let devicesList = usb.getDevices();
+```ts
+let devicesList: Array<USBDevice> = usb.getDevices();
 if (devicesList.length == 0) {
   console.log(`device list is empty`);
 }
 
 usb.requestRight(devicesList[0].name);
-let devicepipe = usb.connectDevice(devicesList[0]);
-let ret = usb.closePipe(devicepipe);
+let devicepipe: USBDevicePipe = usb.connectDevice(devicesList[0]);
+let ret: number = usb.closePipe(devicepipe);
 console.log(`closePipe = ${ret}`);
 ```
 
@@ -636,9 +638,9 @@ usbFunctionsFromString(funcs: string): number
 
 **示例：**
 
-```js
-let funcs = "acm";
-let ret = usb.usbFunctionsFromString(funcs);
+```ts
+let funcs: string = "acm";
+let ret: number = usb.usbFunctionsFromString(funcs);
 ```
 
 ## usb.usbFunctionsToString
@@ -665,9 +667,9 @@ usbFunctionsToString(funcs: FunctionType): string
 
 **示例：**
 
-```js
-let funcs = usb.FunctionType.ACM | usb.FunctionType.ECM;
-let ret = usb.usbFunctionsToString(funcs);
+```ts
+let funcs: string = usb.FunctionType.ACM | usb.FunctionType.ECM;
+let ret: number = usb.usbFunctionsToString(funcs);
 ```
 
 ## usb.setCurrentFunctions
@@ -702,11 +704,12 @@ setCurrentFunctions(funcs: FunctionType): Promise\<void\>
 
 **示例：**
 
-```js
-let funcs = usb.FunctionType.HDC;
+```ts
+import {BusinessError} from '@ohos.base';
+let funcs: string = usb.FunctionType.HDC;
 usb.setCurrentFunctions(funcs).then(() => {
     console.info('usb setCurrentFunctions successfully.');
-}).catch(err => {
+}).catch(err: BusinessError => {
     console.error('usb setCurrentFunctions failed: ' + err.code + ' message: ' + err.message);
 });
 ```
@@ -729,8 +732,8 @@ getCurrentFunctions(): FunctionType
 
 **示例：**
 
-```js
-let ret = usb.getCurrentFunctions();
+```ts
+let ret: number = usb.getCurrentFunctions();
 ```
 
 ## usb.getPorts
@@ -751,8 +754,8 @@ getPorts(): Array\<USBPort\>
 
 **示例：**
 
-```js
-let ret = usb.getPorts();
+```ts
+let ret: number = usb.getPorts();
 ```
 
 ## usb.getSupportedModes
@@ -779,8 +782,8 @@ getSupportedModes(portId: number): PortModeType
 
 **示例：**
 
-```js
-let ret = usb.getSupportedModes(0);
+```ts
+let ret: number = usb.getSupportedModes(0);
 ```
 
 ## usb.setPortRoles
@@ -809,11 +812,12 @@ setPortRoles(portId: number, powerRole: PowerRoleType, dataRole: DataRoleType):
 
 **示例：**
 
-```js
-let portId = 1;
+```ts
+import {BusinessError} from '@ohos.base';
+let portId: number = 1;
 usb.setPortRoles(portId, usb.PowerRoleType.SOURCE, usb.DataRoleType.HOST).then(() => {
     console.info('usb setPortRoles successfully.');
-}).catch(err => {
+}).catch(: BusinessError => {
     console.error('usb setPortRoles failed: ' + err.code + ' message: ' + err.message);
 });
 ```