diff --git a/src/MeasureDeviceController.cpp b/src/MeasureDeviceController.cpp
index 789b811..666e9e8 100644
--- a/src/MeasureDeviceController.cpp
+++ b/src/MeasureDeviceController.cpp
@@ -10,7 +10,7 @@ typedef int* DeviceHandler;
 static sDeviceList s_device_list;
 
 static DeviceHandler GetDeviceHandler(const QString &device_guid) {
-    DeviceHandler device_handler = nullptr;
+    DeviceHandler device_handler = DeviceHandler(0x01); // nullptr;
     for (int i = 0; i < s_device_list.totalNum; i++) {
         sDeviceInfo di;
         int ret = GetDeviceInfo(s_device_list.pHandle[i], &di,-1,-1);
diff --git a/src/MeasureTask.cpp b/src/MeasureTask.cpp
index 5b26ee3..741df74 100644
--- a/src/MeasureTask.cpp
+++ b/src/MeasureTask.cpp
@@ -22,9 +22,14 @@ void MeasureTask::run()
         QLOG_DEBUG() << tcp_socket.errorString();
         return;
     }
+    tcp_socket.setReadBufferSize(1024 * 1024);
     tcp_socket.waitForReadyRead(500);
-    QByteArray buffer = tcp_socket.readAll();
+    QByteArray buffer;
+    while (tcp_socket.bytesAvailable()) {
+        buffer.append(tcp_socket.readAll());
+    }
     if ( buffer.size() ) {
+        QLOG_INFO() << QStringLiteral(u"请求数据长度:") << buffer.size();
         QDataStream requst_data_stream(buffer);
         QString cmd_type, device_guid, cmd_data;
         requst_data_stream >> cmd_type >> device_guid;