diff --git a/func/Module_mainwindow.py b/func/Module_mainwindow.py
index f6ba025..f817539 100644
--- a/func/Module_mainwindow.py
+++ b/func/Module_mainwindow.py
@@ -1,6 +1,7 @@
 from pathlib import Path
 
 from PySide6.QtWidgets import QMainWindow, QMessageBox, QFileDialog
+from PySide6.QtGui import QGuiApplication
 from matplotlib import use
 from yaml import dump, load, FullLoader
 
@@ -34,7 +35,15 @@ class MainWindow(QMainWindow, Ui_Signal_Label):
         self.ui = Ui_Signal_Label()
         self.ui.setupUi(self)
 
-        self.setFixedSize(720, 1080)  # 设置固定大小，禁止缩放
+        # self.setFixedSize(720, 1080)  # 设置固定大小，禁止缩放
+        # 获得屏幕分辨率，以3：4比例设置窗口大小，
+        screen = QGuiApplication.primaryScreen()
+        size = screen.availableGeometry()
+        screen_height = size.height()
+
+        window_height = int(screen_height * 0.75)
+        window_width = int(window_height * 1 / 2)
+        self.resize(window_width, window_height)
 
         # 消息弹窗初始化
         self.msgBox = QMessageBox()