diff --git a/apps/iot/src/iot_udp_handler.erl b/apps/iot/src/iot_udp_handler.erl
index 7d7b5d4..227153c 100644
--- a/apps/iot/src/iot_udp_handler.erl
+++ b/apps/iot/src/iot_udp_handler.erl
@@ -18,7 +18,6 @@ start_link(Transport, Peer) ->
 loop(Transport = {udp, Server, _Sock}, Peer) ->
     receive
         {datagram, Server, <<Len:16, HostUUID:Len/binary>>} ->
-            lager:debug("[iot_udp_handler] peer: ~p, get heartbeat of: ~p", [esockd:format(Peer), HostUUID]),
             Pid = iot_host:get_pid(HostUUID),
             iot_host:heartbeat(Pid),
             loop(Transport, Peer);