diff --git a/mainwindow.cpp b/mainwindow.cpp
index a3028d4..4198148 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -69,7 +69,8 @@ void MainWindow::on_btn_serial_toggle_clicked()
         ui->comboBox_baud->setDisabled(false);
         ui->btn_serial_search->setDisabled(false);
     } else {
-        m_serialPort->setPortName("/dev/" + ui->comboBox_serial->currentText());
+        // m_serialPort->setPortName("/dev/" + ui->comboBox_serial->currentText());
+        m_serialPort->setPortName(ui->comboBox_serial->currentText());
         if (!m_serialPort->open(QIODevice::ReadWrite)) {
             msgBox(this, "串口打开失败", "串口被占用或不存在");
             qDebug() << "Serial open failed";
diff --git a/mainwindow.ui b/mainwindow.ui
index 72df6ad..385c117 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -2,6 +2,9 @@
 <ui version="4.0">
  <class>MainWindow</class>
  <widget class="QMainWindow" name="MainWindow">
+  <property name="windowModality">
+   <enum>Qt::WindowModality::WindowModal</enum>
+  </property>
   <property name="geometry">
    <rect>
     <x>0</x>
@@ -1431,7 +1434,7 @@
      <x>0</x>
      <y>0</y>
      <width>662</width>
-     <height>27</height>
+     <height>22</height>
     </rect>
    </property>
   </widget>