diff --git a/MQTT.py b/MQTT.py
index 29ddd8e..c943430 100644
--- a/MQTT.py
+++ b/MQTT.py
@@ -30,7 +30,7 @@ def on_message(client, userdata, msg):
     # print("验证通过")
     import os
     # device_name = os.environ['device_name']
-    # client.publish('error', payload=device_name, qos=0)
+    client.publish('error', payload=device_name, qos=0)
     # client.publish('success', payload='验证通过', qos=0)
     try:
         origin_data = json.loads(msg.payload.decode('utf-8'))
@@ -69,8 +69,9 @@ times = 120
 def exec_shutdown():
     pass
 
-
+import os
 if __name__ == '__main__':
+    device_name = os.environ.get('device_name')
     while True:
         try:
             client = mqtt.Client(client_id='s')