diff --git a/src/qt_source/mainwindow.cpp b/src/qt_source/mainwindow.cpp
index bc4bb1e..e4bf1c3 100644
--- a/src/qt_source/mainwindow.cpp
+++ b/src/qt_source/mainwindow.cpp
@@ -679,14 +679,16 @@ void MainWindow::serialPort_error(QSerialPort::SerialPortError error)
 void MainWindow::readCom()
 {
     try {
-        QByteArray data = this->serial_->readAll(); // 读取数据
-        if(!data.isEmpty())
-        {
-            this->queue_.push(QString(data));
-            emit getRfid_signals();
+        if (this->serial_->waitForReadyRead(5)) {
+            QByteArray data = this->serial_->readAll(); // 读取数据
+            if(!data.isEmpty())
+            {
+                this->queue_.push(QString(data));
+                emit getRfid_signals();
+            }
+            this->serial_->clear();
+            data.clear();
         }
-        this->serial_->clear();
-        data.clear();
     } catch(...) {
         this->logError("读取串口数据异常！");
     }
@@ -749,8 +751,7 @@ void MainWindow::getQueueDataThread()
             {
                 bool isNoCarriage = false;
                 int carT = strTrainInfo.mid(3, 2).simplified().toInt(&isNoCarriage);
-                isNoCarriage = carT >= 10;
-                if (isNoCarriage) continue;
+                if (isNoCarriage && carT >= 10) continue;
                 vecTrain.append(strTrainInfo);
                 int train_order = vecTrain.size();
                 this->resultTableModel_->setItem(train_order - 1, 0, new QStandardItem(strTrainInfo));