diff --git a/zh-cn/device-dev/subsystems/Readme-CN.md b/zh-cn/device-dev/subsystems/Readme-CN.md
index 313aa9644ef30dc077598dab180087770fd33824..80716e72840992e378b8b3fa7fa12d2d5a2506da 100755
--- a/zh-cn/device-dev/subsystems/Readme-CN.md
+++ b/zh-cn/device-dev/subsystems/Readme-CN.md
@@ -45,8 +45,8 @@
   - [Sensor服务子系使用实例](subsys-sensor-demo.md)
 - [Usb服务子系统指南](subsys-usbservice.md)
   - [USB服务子系概述](subsys-usbservice-overview.md)
-  - [USB服务子系概述](subsys-usbservice-guide.md)
-  - [USB服务子系概述](subsys-usbservice-demo.md)
+  - [USB服务子系使用指导](subsys-usbservice-guide.md)
+  - [USB服务子系使用实例](subsys-usbservice-demo.md)
 - [用户程序框架](subsys-application-framework.md)
   - [概述](subsys-application-framework-overview.md)
   - [搭建环境](subsys-application-framework-envbuild.md)
diff --git a/zh-cn/device-dev/subsystems/subsys-usbservice-demo.md b/zh-cn/device-dev/subsystems/subsys-usbservice-demo.md
index da58221fd01a328428f45f156d692651afa21fac..5ba094ce370f0585ed359206c0d93d56bc2a759b 100644
--- a/zh-cn/device-dev/subsystems/subsys-usbservice-demo.md
+++ b/zh-cn/device-dev/subsystems/subsys-usbservice-demo.md
@@ -2,64 +2,156 @@
 
 
 ```
-#include "usb_device_pipe_test.h"
+#include <cstdio>
 #include <iostream>
-#include <vector>
-#include "delayed_sp_singleton.h"
-#include "hilog_wrapper.h"
+#include <map>
+#include <mutex>
+#include <sstream>
 #include "if_system_ability_manager.h"
+#include "ipc_skeleton.h"
+#include "iremote_object.h"
+#include "iservice_registry.h"
+#include "iusb_srv.h"
+#include "string_ex.h"
 #include "system_ability_definition.h"
+#include "usb_common.h"
+#include "usb_device.h"
+#include "usb_request.h"
+#include "usb_server_proxy.h"
 #include "usb_srv_client.h"
+#include "usb_errors.h"
+#include <sys/time.h>
 
-void UsbDevicePipeTest::SetUpTestCase(void)
+//需要修改/base/usb/usb_manager/service/BUILD.gn和/base/usb/usb_manager/ohos.build文件
+//usb_manager/servrice/BUILD.gn是因为.cpp文件在service目录下，可根据实际情况来调整gn的指定路径
+
+int main(int argc, char **argv)
 {
-    auto &srvClient = UsbSrvClient::GetInstance();
-    auto ret = srvClient.SetPortRole(1, 1, 1);
-    sleep(SLEEP_TIME);
-    USB_HILOGI(MODULE_USB_SERVICE, "UsbDevicePipeTest:: [Device] SetPortRole=%{public}d", ret);
-    ASSERT_TRUE(ret == 0);
+    int32_t ret;
+    static OHOS::USB::UsbSrvClient &g_usbClient = OHOS::USB::UsbSrvClient::GetInstance();
+    // GetDevices
+    std::vector<OHOS::USB::UsbDevice> deviceList;
+    ret = g_usbClient.GetDevices(deviceList);
     if (ret != 0) {
-        exit(0);
+        std::cout << "GetDevices failed width ret = " << ret << std::endl;
+        return -5;
     }
-
-    std::cout << "请连接设备，连接完后按回车键继续" << std::endl;
-    int c;
-    while ((c = getchar()) != '\n' && c != EOF) {
-        ;
+    if (deviceList.empty()) {
+        std::cout << "device list is empty." << std::endl;
+        return -5;
     }
-}
-
-/* 测试用例函数 */
-HWTEST_F(UsbDevicePipeTest, UsbBulkTransfer001, TestSize.Level1)
-{
-    vector<UsbDevice> devi;
-    // 获取usb service实例
-    auto &UsbSrvClient = UsbSrvClient::GetInstance();
-    // 获取usb设备列表
-    auto ret = UsbSrvClient.GetDevices(devi);
-    EXPECT_TRUE(ret == 0);
-    EXPECT_TRUE(!(devi.empty())) << "delist NULL";
-    USBDevicePipe pipe;
-    UsbDevice device = devi.front();
-    // 申请设备权限
-    UsbSrvClient.RequestRight(device.GetName());
-    // 打开设备
-    ret = UsbSrvClient.OpenDevice(device, pipe);
-    EXPECT_TRUE(ret == 0);
-    UsbInterface interface = device.GetConfigs().front().GetInterfaces().at(1);
-    USBEndpoint point = interface.GetEndpoints().front();
-    // 配置设备接口
-    ret = UsbSrvClient.ClaimInterface(pipe, interface, true);
-    EXPECT_TRUE(ret == 0);
-    uint8_t buffer[255] = "bulk read";
-    uint32_t len = 255;
-    std::vector<uint8_t> bulkbuffer = {buffer, buffer + len};
-    // 数据传输
-    ret = UsbSrvClient.BulkTransfer(pipe, point, bulkbuffer, 500);
-    EXPECT_TRUE(ret == 0);
-    // 关闭设备
-    bool close = UsbSrvClient.Close(pipe);
-    EXPECT_TRUE(close);
+    for (auto it = deviceList.begin(); it != deviceList.end(); ++it) {
+        std::cout << "device info :" << it->ToString() << "\n" << std::endl;
+    }
+    std::cout << "usb_device_test : << GetDevices >> test end ok <-" << std::endl;
+    OHOS::USB::UsbDevice device = deviceList[0];
+    std::vector<OHOS::USB::USBConfig> configs = device.GetConfigs();
+    OHOS::USB::USBConfig config = configs[0];
+    std::vector<OHOS::USB::UsbInterface> interfaces = config.GetInterfaces();
+    OHOS::USB::UsbInterface interface;
+    OHOS::USB::USBEndpoint inEp;
+    OHOS::USB::USBEndpoint outEp;
+    bool interfaceFlg = false;
+    bool inEpFlg = false;
+    bool outEpFlg = false;
+    std::string hstr = "\t";
+    std::cout << "test device Info:" << device.ToString() << std::endl;
+    std::cout << hstr << "config Info:" << config.ToString() << std::endl;
+    hstr += "\t";
+    for (int32_t i = 0; i < config.GetInterfaceCount(); ++i) {
+        OHOS::USB::UsbInterface tif = interfaces[i];
+        std::cout << hstr << "Interfaces[" << i << "]:" << std::endl;
+        std::cout << hstr << tif.ToString() << std::endl;
+        std::string hestr = hstr + "\t";
+        std::vector<OHOS::USB::USBEndpoint> mEndpoints = tif.GetEndpoints();
+        for (int32_t j = 0; j < tif.GetEndpointCount(); ++j) {
+            OHOS::USB::USBEndpoint tep = mEndpoints[j];
+            std::cout << hestr << "mEndpoints[" << j << "]:" << std::endl;
+            std::cout << hestr << tep.ToString() << std::endl;
+            if ((tif.GetClass() == 10) && (tif.GetSubClass() == 0) && (tif.GetProtocol() == 2)) {
+                if ((!interfaceFlg) && (tep.GetType() == 2)) {
+                    if (tep.GetDirection()) {
+                        inEp = tep;
+                        inEpFlg = true;
+                    } else {
+                        outEp = tep;
+                        outEpFlg = true;
+                    }
+                }
+            }
+        }
+        if (!interfaceFlg) {
+            if ((outEpFlg) && (inEpFlg)) {
+                interface = interfaces[i];
+                interfaceFlg = true;
+            } else {
+                inEpFlg = false;
+                outEpFlg = false;
+            }
+        }
+        std::cout << std::endl;
+    }
+// OpenDevice
+    std::cout << "usb_device_test : << OpenDevice >> test begin -> " << std::endl;
+    OHOS::USB::USBDevicePipe pip;
+    ret = g_usbClient.RequestRight(device.GetName());
+    std::cout << "设备请求权限结果 ret = " << ret << std::endl;
+    if (0 != ret) {
+        std::cout << "设备请求权限失败 ret = " << ret << std::endl;
+    }
+    ret = g_usbClient.OpenDevice(device, pip);
+    if (ret != 0) {
+        std::cout << "OpenDevice failed width ret = " << ret << std::endl;
+        return -5;
+    }
+    std::cout << "usb_device_test : << Control Transfer >> " << std::endl;
+    int32_t requestCmd = 6;
+    int32_t requestType = ((1 << 7) | (0 << 5) | (0 & 0x1f));
+    int32_t value = (2 << 8) + 0; // descriptor type << 8 + descriptor index
+    int32_t index = 0;
+    int32_t timeout = 5000;
+    std::vector<uint8_t> vData;
+    const OHOS::USB::UsbCtrlTransfer tctrl = {requestType, requestCmd, value, index, timeout};
+    ret = g_usbClient.ControlTransfer(pip, tctrl, vData);
+    if (ret != 0) {
+        std::cout << "control message read failed width ret = " << ret << std::endl;
+    } else {
+        std::cout << "control message read success" << std::endl;
+    }
+    if (interfaceFlg) {
+        std::cout << "ClaimInterface InterfaceInfo:" << interface.ToString() << std::endl;
+        ret = g_usbClient.ClaimInterface(pip, interface, true);
+        if (ret != 0) {
+            std::cout << "ClaimInterface failed width ret = " << ret << std::endl;
+        } else {
+            std::cout << "ClaimInterface success" << std::endl;
+        }
+    }
+    // BulkTransfer
+    if (interfaceFlg) {
+        std::cout << "usb_device_test : << Bulk transfer start >> " << std::endl;
+        if (outEpFlg) {
+            std::cout << "usb_device_test : << Bulk transfer write >> " << std::endl;
+            uint8_t buffer[50] = "hello world 123456789";
+            std::vector<uint8_t> vData(buffer, buffer + 21);
+            ret = g_usbClient.BulkTransfer(pip, outEp, vData, 5000);
+            if (ret != 0) {
+                std::cout << "Bulk transfer write failed width ret = " << ret << std::endl;
+            } else {
+                std::cout << "Bulk transfer write success" << std::endl;
+            }
+        }
+    }
+    // CloseDevice
+    std::cout << "usb_device_test : << Close Device >> " << std::endl;
+    ret = g_usbClient.Close(pip);
+    if (ret == 0) {
+        std::cout << "Close device failed width ret = " << ret << std::endl;
+        return -5;
+    } else {
+        std::cout << "Close device success" << std::endl;
+    }
+    return 0;
 }
 ```
 
diff --git a/zh-cn/device-dev/subsystems/subsys-usbservice-guide.md b/zh-cn/device-dev/subsystems/subsys-usbservice-guide.md
index 5ba3115cbeefc77204279d85bc64d350eb64abc5..e80128ea07220be33d7d7e533968d52624c3e405 100644
--- a/zh-cn/device-dev/subsystems/subsys-usbservice-guide.md
+++ b/zh-cn/device-dev/subsystems/subsys-usbservice-guide.md
@@ -9,34 +9,33 @@
 1.  获取usb service实例
 
 ```
-auto &srvClient = UsbSrvClient::GetInstance();
+static OHOS::USB::UsbSrvClient &g_usbClient = OHOS::USB::UsbSrvClient::GetInstance();
 ```
 
 2.  获取usb设备列表
 
 ```
-std::vector<UsbDevice> deviceList;
-int32_t ret = srvClient.GetDevices(deviceList);
+std::vector<OHOS::USB::UsbDevice> deviceList;
+int32_t ret = g_usbClient.GetDevices(deviceList);
 ```
 
 3.  申请设备权限
 
 ```
-UsbDevice device = deviceList.front();
-int32_t ret = UsbSrvClient.RequestRight(device.GetName());
+int32_t ret = g_usbClient.RequestRight(device.GetName());
 ```
 
 4.  打开设备
 
 ```
 USBDevicePipe pip;
-int32_t ret = srvClient.OpenDevice(dev, pip);
+int32_t et = g_usbClient.OpenDevice(device, pip);
 ```
 
 5.  配置设备接口
 
 ```
-srvClient.ClaimInterface(pip, interface, force);
+ret = g_usbClient.ClaimInterface(pip, interface, true);
 interface为deviceList中device的interface。
 ```
 
@@ -50,5 +49,5 @@ pipe为打开设备后的数据传输通道，endpoint为device中数据传输
 7.  关闭设备
 
 ```
-srvClient.Close(pipe);
+ret = g_usbClient.Close(pip);
 ```