diff --git a/app/components/calendar_dialog.py b/app/components/calendar_dialog.py
index 9c177d2..f38026b 100644
--- a/app/components/calendar_dialog.py
+++ b/app/components/calendar_dialog.py
@@ -7,13 +7,15 @@ from PyQt5.QtWidgets import QApplication, QDialog, QCheckBox, QMessageBox, QCale
 
 class CalendarDialog(QDialog):
     selected_date_signal = pyqtSignal(int)
+
     def __init__(self, date_range=None, parent=None):
         """
 
-        @param date_range: tuple[Union[QDate, datetime.date],Union[QDate, datetime.date]]
+        @param date_range: tuple[Union[QDate, datetime.date],Union[QDate, datetime.date]] #限定的可选择范围
         @param parent:
         """
         super().__init__(parent)
+        self.setWindowTitle('选择日期')
         self.calendar = QCalendarWidget(self)
         self.calendar.clicked.connect(self.onDateChanged)
         if date_range:
@@ -29,18 +31,19 @@ class CalendarDialog(QDialog):
         mkt = int(time.mktime(s_t))
         timestamp = mkt
         self.selected_date_signal.emit(timestamp)
-        print("Selected Date:", selected_date.toString("yyyy-MM-dd"),timestamp)
+        print("Selected Date:", selected_date.toString("yyyy-MM-dd"), timestamp)
         self.close()
 
 
 if __name__ == '__main__':
     import sys
     from datetime import datetime
+
     app = QApplication(sys.argv)
     # 设置日期范围
     start_date = datetime(2023, 12, 11)
     end_date = datetime(2024, 1, 9)
-    date_range = (start_date.date(),end_date.date())
+    date_range = (start_date.date(), end_date.date())
     ex = CalendarDialog(date_range=date_range)
     ex.show()
     sys.exit(app.exec_())
diff --git a/app/ui/menu/export.py b/app/ui/menu/export.py
index d847da8..84a5480 100644
--- a/app/ui/menu/export.py
+++ b/app/ui/menu/export.py
@@ -105,7 +105,7 @@ class ExportDialog(QDialog, Ui_Dialog):
             three_months_ago_date = three_months_ago.date()
             three_months_ago_midnight = datetime.combine(three_months_ago_date, datetime.min.time())
             three_months_ago_midnight_timestamp = int(three_months_ago_midnight.timestamp())
-            self.time_range = (three_months_ago_midnight_timestamp,today_midnight_timestamp)
+            self.time_range = (three_months_ago_midnight_timestamp, today_midnight_timestamp)
 
         elif date_range == '自定义时间':
             self.time_range_view = TimeRangeDialog(parent=self)
@@ -116,9 +116,11 @@ class ExportDialog(QDialog, Ui_Dialog):
             #                     "别急别急",
             #                     "马上就实现该功能"
             #                     )
-    def set_time_range(self,time_range):
+
+    def set_time_range(self, time_range):
         self.time_range = time_range
         self.comboBox_time.setCurrentIndex(2)
+
     def export_data(self):
         self.btn_start.setEnabled(False)
         # 在这里获取用户选择的导出数据类型
@@ -141,7 +143,8 @@ class ExportDialog(QDialog, Ui_Dialog):
                 select_contacts.append(self.contacts[i])
         # 在这里根据用户选择的数据类型执行导出操作
         print("选择的文件格式:", file_types)
-        self.worker = Output(select_contacts, type_=Output.Batch, message_types=selected_types, sub_type=file_types,time_range=self.time_range)
+        self.worker = Output(select_contacts, type_=Output.Batch, message_types=selected_types, sub_type=file_types,
+                             time_range=self.time_range)
         # self.worker.progressSignal.connect(self.update_progress)
         self.worker.okSignal.connect(self.export_finished)
         self.worker.rangeSignal.connect(self.set_total_msg_num)
diff --git a/app/ui/menu/export_time_range.py b/app/ui/menu/export_time_range.py
index 9eade1f..6b0a81d 100644
--- a/app/ui/menu/export_time_range.py
+++ b/app/ui/menu/export_time_range.py
@@ -11,25 +11,28 @@ QToolButton{
     color:#000000;
 }
 '''
+
+
 class TimeRangeDialog(QDialog, Ui_Dialog):
     date_range_signal = pyqtSignal(tuple)
 
     def __init__(self, date_range=None, parent=None):
         """
 
-        @param date_range: tuple[Union[QDate, datetime.date],Union[QDate, datetime.date]]
+        @param date_range: tuple[Union[QDate, datetime.date],Union[QDate, datetime.date]] 限定的可选择范围
         @param parent:
         """
         super().__init__(parent)
         self.calendar = None
         self.setupUi(self)
+        self.setWindowTitle('选择日期范围')
         self.setStyleSheet(Stylesheet)
         self.toolButton_start_time.clicked.connect(self.select_date_start)
         self.toolButton_end_time.clicked.connect(self.select_date_end)
         self.calendar = CalendarDialog(date_range=date_range, parent=self)
         self.calendar.selected_date_signal.connect(self.set_date)
         self.btn_ok.clicked.connect(self.ok)
-        self.btn_cancel.clicked.connect(lambda x:self.close())
+        self.btn_cancel.clicked.connect(lambda x: self.close())
         self.start_time_flag = True
         self.start_timestamp = 0
         self.end_timestamp = 0
@@ -38,17 +41,19 @@ class TimeRangeDialog(QDialog, Ui_Dialog):
         if self.start_time_flag:
             self.start_timestamp = timestamp
             date_object = datetime.fromtimestamp(timestamp)
-            str_start =date_object.strftime("%Y-%m-%d")
+            str_start = date_object.strftime("%Y-%m-%d")
             self.toolButton_start_time.setText(str_start)
         else:
             date_object = datetime.fromtimestamp(timestamp)
             str_start = date_object.strftime("%Y-%m-%d")
             self.end_timestamp = timestamp + 86399
             self.toolButton_end_time.setText(str_start)
+
     def ok(self):
-        date_range = (self.start_timestamp,self.end_timestamp)
+        date_range = (self.start_timestamp, self.end_timestamp)
         self.date_range_signal.emit(date_range)
         self.close()
+
     def select_date_start(self):
         self.start_time_flag = True
         self.calendar.show()