diff --git a/network.py b/network.py
index dbb3ecb..ad66ac6 100644
--- a/network.py
+++ b/network.py
@@ -669,6 +669,8 @@ class NetworkManager:
         self.logger.info(f"[conn wifi] cmd600 , data: {inner_data}")
         ssid = inner_data.get("ssid")
         password = inner_data.get("password")
+        # 停止旧的WiFi质量监测（无论当前是WiFi还是4G连接）
+        self._stop_wifi_quality_monitor()
         try:
             for _f in ("/etc/wpa_supplicant.conf", "/boot/wpa_supplicant.conf", "/boot/wifi.ssid", "/boot/wifi.pass"):
                 try: