diff --git a/app/ui_pc/chat/chat_info.py b/app/ui_pc/chat/chat_info.py
index 3df71d3..9e8e36a 100644
--- a/app/ui_pc/chat/chat_info.py
+++ b/app/ui_pc/chat/chat_info.py
@@ -39,7 +39,7 @@ class ChatInfo(QWidget):
         self.show_chat_thread = ShowChatThread(self.contact)
         self.show_chat_thread.showSingal.connect(self.add_message)
         self.show_chat_thread.finishSingal.connect(self.show_finish)
-        self.show_chat_thread.start()
+        # self.show_chat_thread.start()
 
     def show_finish(self, ok):
         self.setScrollBarPos()
diff --git a/app/ui_pc/chat/chat_window.py b/app/ui_pc/chat/chat_window.py
index e5a6ba1..a0cf7cd 100644
--- a/app/ui_pc/chat/chat_window.py
+++ b/app/ui_pc/chat/chat_window.py
@@ -58,6 +58,7 @@ class ChatWindow(QWidget, Ui_Form):
         self.contacts = [[], []]
         self.init_ui()
         self.show_chats()
+        self.visited = set()
 
     def init_ui(self):
         search_action = QAction(self.lineEdit)
@@ -112,6 +113,10 @@ class ChatWindow(QWidget, Ui_Form):
     def setCurrentIndex(self, row):
         # print(row)
         self.stackedWidget.setCurrentIndex(row)
+        if row not in self.visited:
+            chat_info_window = self.stackedWidget.currentWidget()
+            chat_info_window.update_history_messages()
+            self.visited.add(row)
 
     def stop_loading(self, a0):
         # self.label.setVisible(False)