diff --git a/src/MQTT.py b/src/MQTT.py
index e4a7d8a..5f25074 100644
--- a/src/MQTT.py
+++ b/src/MQTT.py
@@ -17,11 +17,13 @@ def on_connect(client, userdata, flags, rc):
 
 def valid(msg, client):
     origin_data = json.loads(msg.payload.decode('utf-8'))
-    dev_num = origin_data['device_name']
-    if dev_num is None:
-        client.publish('error', payload='dev_num must be supplied', qos=0)
+    if 'msg' not in origin_data:
+        client.publish('error', payload='msg must be supplied', qos=0)
         return False
-    if dev_num != device_name:
+    if 'device_name' not in origin_data:
+        client.publish('error', payload='device_name must be supplied', qos=0)
+        return False
+    if origin_data['device_name'] != device_name:
         return False
     return True
 
@@ -29,13 +31,12 @@ def valid(msg, client):
 # Message receiving callback
 def on_message(client, userdata, msg):
     if not valid(msg, client):
+        # print("验证失败")
         return
+    # print("验证通过")
     try:
         origin_data = json.loads(msg.payload.decode('utf-8'))
         data = origin_data["msg"]
-        if data is None:
-            client.publish('error', payload='msg must be supplied', qos=0)
-            return
         if data == "push_stream":
             # 启动推流视频
             push_stream(client)
diff --git a/src/__pycache__/tool.cpython-310.pyc b/src/__pycache__/tool.cpython-310.pyc
index f00202c..de4864f 100644
Binary files a/src/__pycache__/tool.cpython-310.pyc and b/src/__pycache__/tool.cpython-310.pyc differ
diff --git a/src/tool.py b/src/tool.py
index 7e41d63..a28008f 100644
--- a/src/tool.py
+++ b/src/tool.py
@@ -25,7 +25,11 @@ def close_stream(client):
 
 
 def exec_sh(msg, client):
-    cmd = json.loads(msg.payload.decode('utf-8'))["data"]
+    origin_data = json.loads(msg.payload.decode('utf-8'))
+    if 'data' not in origin_data:
+        client.publish('error', payload='data must be supplied', qos=0)
+        return
+    cmd = origin_data["data"]
     if cmd == "supervisorctl stop __mqtt__" or cmd == "supervisorctl restart __mqtt__":
         return
     if cmd == "supervisorctl reload":