diff --git a/src/budget/_account.py b/src/budget/_account.py
index 2d78e24..f40160e 100644
--- a/src/budget/_account.py
+++ b/src/budget/_account.py
@@ -35,7 +35,6 @@ class AccountTab(TabPage):
         # 新建对话框，询问是否删除
         dialog = QDialog(self)
         dialog.setWindowTitle('Delete Account')
-        dialog.resize(300, 200)
 
         label1 = QLabel("Are you sure to delete this account?")
         label2 = QLabel("This action cannot be undone.")
@@ -48,7 +47,9 @@ class AccountTab(TabPage):
         layout.addWidget(label1)
         layout.addWidget(label2)
         layout.addWidget(buttonBox)
-
+        layout.setSpacing(12)
+        layout.setContentsMargins(15, 15, 15, 15)
+        dialog.setMinimumWidth(400)
         dialog.setLayout(layout)
 
         # 若确认删除，则执行删除操作
@@ -70,7 +71,6 @@ class AccountTab(TabPage):
         # 创建添加数据对话框
         self.aDialog = QDialog(self)
         self.aDialog.setWindowTitle('Modify')
-        self.aDialog.resize(400, 300)
 
         index = self.accountComboBox.currentIndex()
         # 若为空，抛出错误
@@ -119,7 +119,9 @@ class AccountTab(TabPage):
         layout.addRow(label2,line2)
         layout.addRow(label3,line3)
         layout.addRow(buttonLayout)
-
+        layout.setSpacing(12)
+        layout.setContentsMargins(15, 15, 15, 15)
+        self.aDialog.setMinimumWidth(400)
         self.aDialog.setLayout(layout)
 
         # 显示添加数据对话框
@@ -152,7 +154,6 @@ class AccountTab(TabPage):
         # 创建添加数据对话框
         self.aDialog = QDialog(self)
         self.aDialog.setWindowTitle('Add New Account')
-        self.aDialog.resize(400, 300)
 
         label1 = QLabel("Account Name:")
         line1 = QLineEdit()
@@ -178,7 +179,9 @@ class AccountTab(TabPage):
         layout.addRow(label2,line2)
         layout.addRow(label3,line3)
         layout.addRow(buttonLayout)
-
+        layout.setSpacing(12)
+        layout.setContentsMargins(15, 15, 15, 15)
+        self.aDialog.setMinimumWidth(400)
         self.aDialog.setLayout(layout)
 
         # 显示添加数据对话框
diff --git a/src/budget/_category.py b/src/budget/_category.py
index a7bce9b..c09785c 100644
--- a/src/budget/_category.py
+++ b/src/budget/_category.py
@@ -35,9 +35,8 @@ class CategoryTab(TabPage):
 
     def onCategoryModifyClicked(self):
         # 创建添加数据对话框
-        addDialog = QDialog(self)
-        addDialog.setWindowTitle('Modify Category')
-        addDialog.resize(400, 300)
+        self.cDialog = QDialog(self)
+        self.cDialog.setWindowTitle('Modify Category')
 
         index = self.categoryComboBox.currentIndex()
         # 若为空，抛出错误
@@ -79,20 +78,22 @@ class CategoryTab(TabPage):
         buttonLayout.addWidget(button3)
         buttonLayout.addWidget(button2)
 
-        button1.clicked.connect(addDialog.accept)
+        button1.clicked.connect(self.cDialog.accept)
         button3.clicked.connect(self.onCategoryDeleteClicked)
-        button2.clicked.connect(addDialog.reject)
+        button2.clicked.connect(self.cDialog.reject)
 
         layout = QFormLayout()
         layout.addRow(label1, line1)
         layout.addRow(label2, line2)
         layout.addRow(label3, line3)
         layout.addRow(buttonLayout)
-
-        addDialog.setLayout(layout)
+        layout.setSpacing(12)
+        layout.setContentsMargins(15, 15, 15, 15)
+        self.cDialog.setLayout(layout)
+        self.cDialog.setMinimumWidth(400)
 
         # 显示添加数据对话框
-        if addDialog.exec() == QDialog.DialogCode.Accepted:
+        if self.cDialog.exec() == QDialog.DialogCode.Accepted:
             try:
                 # 获取输入数据
                 name = line1.text()
@@ -124,9 +125,8 @@ class CategoryTab(TabPage):
 
     def onCategoryAddClicked(self):
         # 创建添加数据对话框
-        addDialog = QDialog(self)
-        addDialog.setWindowTitle('Add New Category')
-        addDialog.resize(400, 300)
+        self.cDialog = QDialog(self)
+        self.cDialog.setWindowTitle('Add New Category')
 
         label1 = QLabel("Category Name:")
         line1 = QLineEdit()
@@ -144,19 +144,21 @@ class CategoryTab(TabPage):
         buttonLayout.addWidget(button1)
         buttonLayout.addWidget(button2)
 
-        button1.clicked.connect(addDialog.accept)
-        button2.clicked.connect(addDialog.reject)
+        button1.clicked.connect(self.cDialog.accept)
+        button2.clicked.connect(self.cDialog.reject)
 
         layout = QFormLayout()
         layout.addRow(label1, line1)
         layout.addRow(label2, line2)
         layout.addRow(label3, line3)
         layout.addRow(buttonLayout)
-
-        addDialog.setLayout(layout)
+        layout.setSpacing(12)
+        layout.setContentsMargins(15, 15, 15, 15)
+        self.cDialog.setMinimumWidth(400)
+        self.cDialog.setLayout(layout)
 
         # 显示添加数据对话框
-        if addDialog.exec() == QDialog.DialogCode.Accepted:
+        if self.cDialog.exec() == QDialog.DialogCode.Accepted:
             try:
                 # 获取输入数据
                 name = line1.text()
diff --git a/src/budget/_mw.py b/src/budget/_mw.py
index decfc6a..9e743c3 100644
--- a/src/budget/_mw.py
+++ b/src/budget/_mw.py
@@ -7,7 +7,7 @@ from ._account import AccountTab
 def initUI(self):
 
     self.setWindowTitle('budget')
-    self.setGeometry(100, 100, 800, 600)
+    self.setMinimumSize(800, 400)
 
     self.pg = PostgresTab()
     self.categoryTab = CategoryTab(self)
@@ -19,6 +19,7 @@ def initUI(self):
     mainWidget.addTab(self.categoryTab, 'Category')
     mainWidget.addTab(self.accountTab, 'Account')
 
+    # 槽连接
     mainWidget.currentChanged.connect(self.onTabChanged)
 
     self.setCentralWidget(mainWidget)