diff --git a/apps/iot/src/mnesia/mnesia_endpoint.erl b/apps/iot/src/mnesia/mnesia_endpoint.erl
index a3e2ea5..e787ae5 100644
--- a/apps/iot/src/mnesia/mnesia_endpoint.erl
+++ b/apps/iot/src/mnesia/mnesia_endpoint.erl
@@ -43,7 +43,7 @@ zhongdian_mqtt_endpoint() ->
         mapper_fun = MapperFun,
         config = #mqtt_endpoint{
             host = <<"172.30.6.161">>,
-            port = 18083,
+            port = 1883,
             username = <<"admin">>,
             password = <<"123456">>,
             topic = <<"CET/NX/upload">>,