diff --git a/apps/iot/src/consumer/iot_zd_consumer.erl b/apps/iot/src/consumer/iot_zd_consumer.erl
index 1db6399..98f80b4 100644
--- a/apps/iot/src/consumer/iot_zd_consumer.erl
+++ b/apps/iot/src/consumer/iot_zd_consumer.erl
@@ -28,7 +28,7 @@
 
 %% 需要订阅的主题信息
 -define(Topics,[
-    {<<"CET/NX/upload">>, 2}
+    {<<"CET/NX/download">>, 2}
 ]).
 
 -record(state, {