diff --git a/apps/iot/src/mnesia/mnesia_data_importer.erl b/apps/iot/src/mnesia/mnesia_data_importer.erl
index 235b6dd..329f961 100644
--- a/apps/iot/src/mnesia/mnesia_data_importer.erl
+++ b/apps/iot/src/mnesia/mnesia_data_importer.erl
@@ -38,7 +38,7 @@ zhongdian_mqtt_endpoint() ->
         mapper_fun = MapperFun,
         config = #mqtt_endpoint{
             % host = <<"172.30.6.161">>,
-            host = <<"115.236.153.172">>,
+            host = <<"115.236.153.181">>,
             port = 36980,
             username = <<"admin">>,
             password = <<"123456">>,