diff --git a/MainWidget.cpp b/MainWidget.cpp
index 6bddaf4..49dab86 100644
--- a/MainWidget.cpp
+++ b/MainWidget.cpp
@@ -4,6 +4,7 @@
 #include <QFile>
 #include <QKeyEvent>
 #include <QDateTime>
+#include <QScreen>
 #include <QRegularExpression>
 #include <filesystem>
 #include "src/data_edit.h"
@@ -18,8 +19,13 @@ MainWidget::MainWidget(QWidget* parent) : QWidget(parent), ui(new Ui::MainWidget
     setWindowTitle(u8"OneLevelXmlOpr v1.2.9");
     setWindowIcon(QIcon("://resource/xml.ico"));
 
-    setMinimumWidth(900);
-    setMinimumHeight(800);
+
+    QScreen* primaryScreen = QGuiApplication::primaryScreen();
+    QRect    screenGeometry = primaryScreen->geometry();
+    setMinimumWidth(screenGeometry.width() * 0.5);
+    setMinimumHeight(screenGeometry.height() * 0.8);
+    // setMinimumWidth(900);
+    // setMinimumHeight(800);
 
     width_.push_back(280);
     for (int i = 0; i < 30; ++i) {