diff --git a/apps/iot/src/iot_host.erl b/apps/iot/src/iot_host.erl
index b76ef09..8cc5ef6 100644
--- a/apps/iot/src/iot_host.erl
+++ b/apps/iot/src/iot_host.erl
@@ -178,6 +178,7 @@ handle_event({call, From}, {publish_message, ReceiverPid, CommandType, {aes, Com
 
 handle_event({call, From}, {publish_message, ReceiverPid, CommandType, Command}, _, State = #state{channel_pid = ChannelPid}) when is_binary(Command), is_pid(ChannelPid) ->
     %% 通过websocket发送请求
+    lager:debug("[iot_host] will publish_message: ~p", [Command]),
     Ref = ws_channel:publish(ChannelPid, ReceiverPid, <<CommandType:8, Command/binary>>),
 
     {keep_state, State, [{reply, From, {ok, Ref}}]};