diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index a303882b..ecb8836e 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -333,6 +333,7 @@ bool CPhoneDevice::SelfTest(std::string& result)
         std::string path = m_appPath + (APP_PATH_CHANNELS DIR_SEP_STR);
 
         unsigned char cameraId = 0;
+        unsigned char usbCamera = 0;
         Json::Value channelCfg = Json::objectValue;
         content.clear();
         filePath = m_appPath + (APP_DATA_DIR DIR_SEP_STR APP_FILE_NAME_APP_CONF);
@@ -348,7 +349,7 @@ bool CPhoneDevice::SelfTest(std::string& result)
             const char* doc = (const char*)&(content[0]);
             if (reader->parse(doc, doc + content.size(), &channelCfg, NULL))
             {
-                unsigned char val = 0;
+                GetJSONUInt8Value(channelCfg, "usbCamera", usbCamera);
                 if (GetJSONUInt8Value(channelCfg, "cameraId", cameraId))
                 {
                     result += "通道" + std::to_string(channel) + " Camera ID为 " + std::to_string(cameraId) + "\r\n";
@@ -368,8 +369,19 @@ bool CPhoneDevice::SelfTest(std::string& result)
         int32_t width = 0;
         int32_t height = 0;
         NdkCamera::CAMERA_PARAMS params = { 0 };
+        if (usbCamera)
+        {
+            TurnOnOtg(NULL);
+        }
+        TurnOnCameraPower(NULL);
+
         NdkCamera camera(width, height, params);
         int res = camera.selfTest(std::to_string(cameraId), width, height);
+        TurnOffCameraPower(NULL);
+        if (usbCamera)
+        {
+            TurnOffOtg(NULL);
+        }
         if (res == 0)
         {
             result += "通道" + std::to_string(channel) + "正常：最大分辨率：" + std::to_string(width) + "x" + std::to_string(height) + "\r\n";