diff --git a/wifi_manager.py b/wifi_manager.py
index c036624..0dffb56 100644
--- a/wifi_manager.py
+++ b/wifi_manager.py
@@ -104,7 +104,7 @@ def scan_wifi():
         
         return wifi_list
     except subprocess.CalledProcessError as e:
-        print(f"Error scanning for Wi-Fi networks: {e}")
+        print(f"{datetime.datetime.now()}: Error scanning for Wi-Fi networks: {e}")
         return []
 
 
@@ -113,9 +113,9 @@ def connect_wifi(ssid, password):
     # 关闭热点
     try:
         subprocess.run(['sudo', 'create_ap', '--stop', 'wlan0'], check=True)
-        print(f"{datetime.datetime.now()} Stopping create_ap service")
+        print(f"{datetime.datetime.now()}: Stopping create_ap service")
     except subprocess.CalledProcessError as e:
-        print(f"{datetime.datetime.now()} Error stopping hotspot: {e}")
+        print(f"{datetime.datetime.now()}: Error stopping hotspot: {e}")
     
     time.sleep(1)
     
@@ -127,10 +127,10 @@ def connect_wifi(ssid, password):
     # 连接到用户选择的 Wi-Fi 网络
     try:
         subprocess.run(['nmcli', 'dev', 'wifi', 'connect', ssid, 'password', password], check=True)
-        print(f"{datetime.datetime.now()} Successfully connected to Wi-Fi: {ssid}")
+        print(f"{datetime.datetime.now()}: Successfully connected to Wi-Fi: {ssid}")
         return True
     except subprocess.CalledProcessError as e:
-        print(f"{datetime.datetime.now()} Error connecting to Wi-Fi: {e}")
+        print(f"{datetime.datetime.now()}: Error connecting to Wi-Fi: {e}")
         return False
     
 # 主页
@@ -151,16 +151,32 @@ def submit():
     orangepi.set_led_on('red')
     ssid = request.form['ssid']
     password = request.form['password']
-    print(f"{datetime.datetime.now()} Connecting to Wi-Fi: {ssid} with password {password}")
+    print(f"{datetime.datetime.now()}: Connecting to Wi-Fi: {ssid} with password {password}")
     connected = connect_wifi(ssid, password)
     
     time.sleep(5)
     # 检查是否成功连接Wi-Fi
     if check_wifi_connection() and connected:
         orangepi.set_led_off('red')
-        os._exit(0)  # 成功连接后退出程序
+        # connected successfully, close flask
+        print(f"{datetime.datetime.now()}: Wi-Fi连接成功，关闭应用程序。")
+        # 关闭flask app，关闭python相关的所有进程，并退出程序
+        flask_pid = os.getpid()
+        python_pids = [p.info['pid'] for p in psutil.process_iter(attrs=['pid', 'name']) if p.info['name'] == 'python3']
+        
+        # 关闭Flask应用程序进程
+        os.kill(flask_pid, signal.SIGTERM)
+        
+        # 关闭Python进程
+        for pid in python_pids:
+            os.kill(pid, signal.SIGTERM)
+        
+        exit(0)
+        
+        
     else:
-        print("Wi-Fi连接失败。")
+        print(f"{datetime.datetime.now()}: Wi-Fi连接失败。")
+        restart_hotspot()
         
     return redirect(url_for('index'))
 
@@ -172,12 +188,12 @@ if __name__ == '__main__':
     if not debug_mode:
         time.sleep(5)  # 等待 Wi-Fi 连接
         if check_wifi_connection():
-            print(f"{datetime.datetime.now()} 已连接到 Wi-Fi 网络，退出程序")
+            print(f"{datetime.datetime.now()}: 已连接到 Wi-Fi 网络，退出程序")
             exit(0)
         else:
-            print(f"{datetime.datetime.now()} 未连接到 Wi-Fi 网络")
+            print(f"{datetime.datetime.now()}: 未连接到 Wi-Fi 网络")
 
-    print(f"{datetime.datetime.now()} Starting Flask server")
+    print(f"{datetime.datetime.now()}: Starting Flask server")
     print("----------------------------")
     wifi_list = scan_wifi()
     print("----------------------------")