diff --git a/tests/test_main.py b/tests/test_main.py
index bd69671..f63e10a 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -7,10 +7,6 @@ from unittest.mock import patch, MagicMock
 # 添加src目录到Python路径
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', 'src'))
 
-# 使用unittest.mock模拟QApplication避免Qt初始化
-with patch('PyQt5.QtWidgets.QApplication'):
-    from src.main_window import MainWindow
-
 class TestMagicWordApplication(unittest.TestCase):
     def setUp(self):
         """
@@ -18,14 +14,25 @@ class TestMagicWordApplication(unittest.TestCase):
         - 初始化测试环境
         - 创建测试数据
         """
-        # 使用MagicMock替代实际QApplication实例
+        # 使用unittest.mock模拟QApplication避免Qt初始化
         self.app_patcher = patch('PyQt5.QtWidgets.QApplication')
         self.mock_app = self.app_patcher.start()
         self.mock_app_instance = MagicMock()
         self.mock_app.return_value = self.mock_app_instance
         
-        # 创建MainWindow实例
-        self.window = MainWindow()
+        # 模拟导入MainWindow
+        with patch('PyQt5.QtWidgets.QApplication'), \
+             patch('PyQt5.QtWidgets.QMainWindow'), \
+             patch('PyQt5.QtWidgets.QTextEdit'), \
+             patch('PyQt5.QtWidgets.QAction'), \
+             patch('PyQt5.QtWidgets.QFileDialog'), \
+             patch('PyQt5.QtWidgets.QVBoxLayout'), \
+             patch('PyQt5.QtWidgets.QWidget'), \
+             patch('PyQt5.QtWidgets.QLabel'), \
+             patch('PyQt5.QtWidgets.QStatusBar'), \
+             patch('PyQt5.QtWidgets.QMessageBox'):
+            from src.main_window import MainWindow
+            self.window = MainWindow()
     
     def tearDown(self):
         """
@@ -43,12 +50,12 @@ class TestMagicWordApplication(unittest.TestCase):
         - 检查初始状态
         """
         # 验证窗口标题
-        with patch.object(MainWindow, 'windowTitle', return_value='MagicWord'):
+        with patch.object(self.window, 'windowTitle', return_value='隐私学习软件 - 仿Word'):
             title = self.window.windowTitle()
-            self.assertEqual(title, 'MagicWord')
+            self.assertEqual(title, '隐私学习软件 - 仿Word')
         
         # 验证窗口不是全屏
-        with patch.object(MainWindow, 'isFullScreen', return_value=False):
+        with patch.object(self.window, 'isFullScreen', return_value=False):
             fullscreen = self.window.isFullScreen()
             self.assertFalse(fullscreen)
     
@@ -58,12 +65,12 @@ class TestMagicWordApplication(unittest.TestCase):
         - 验证文件打开、保存等功能
         """
         # 模拟菜单栏存在
-        with patch.object(MainWindow, 'menuBar', return_value=MagicMock()):
+        with patch.object(self.window, 'menuBar', return_value=MagicMock()):
             menubar = self.window.menuBar()
             self.assertIsNotNone(menubar)
         
         # 模拟状态栏存在
-        with patch.object(MainWindow, 'statusBar', return_value=MagicMock()):
+        with patch.object(self.window, 'statusBar', return_value=MagicMock()):
             statusbar = self.window.statusBar()
             self.assertIsNotNone(statusbar)