diff --git a/PPOCRLabel/PPOCRLabel.py b/PPOCRLabel/PPOCRLabel.py
index ee8baeb7b5329dab70c1c7653dc3368bcf7480c6..b1ccfc2f61b38567e05e1de0bb3e1b5a7e3f218e 100644
--- a/PPOCRLabel/PPOCRLabel.py
+++ b/PPOCRLabel/PPOCRLabel.py
@@ -101,6 +101,8 @@ class MainWindow(QMainWindow, WindowMixin):
     def __init__(self, lang="ch", gpu=False, defaultFilename=None, defaultPrefdefClassFile=None, defaultSaveDir=None):
         super(MainWindow, self).__init__()
         self.setWindowTitle(__appname__)
+        self.setWindowState(Qt.WindowMaximized)  # set window max
+        self.activateWindow()  # PPOCRLabel goes to the front when activate
 
         # Load setting in the main thread
         self.settings = Settings()