diff --git a/apps/iot/src/endpoint/iot_donghuoliren_endpoint.erl b/apps/iot/src/endpoint/iot_donghuoliren_endpoint.erl
index 399ee90..5f49965 100644
--- a/apps/iot/src/endpoint/iot_donghuoliren_endpoint.erl
+++ b/apps/iot/src/endpoint/iot_donghuoliren_endpoint.erl
@@ -106,7 +106,7 @@ handle_cast({forward, LocationCode, DynamicLocationCode, EventType, Params},
             iot_logger:write(LoggerPid, [<<"OK">>, list_to_binary(Url1), Body, RespBody]),
             {noreply, State#state{succ_counter = SuccCounter + 1}};
         {error, Reason} ->
-            NReason = iolist_to_binary(io_lib:format("~p", Reason)),
+            NReason = iolist_to_binary(io_lib:format("~p", [Reason])),
             iot_logger:write(LoggerPid, [<<"ERROR">>, list_to_binary(Url1), Body, NReason]),
             {noreply, State#state{fail_counter = FailCounter + 1}}
     end.
@@ -211,7 +211,21 @@ serialize0([{K, V}|T], Target) ->
              is_boolean(V) andalso not V ->
                  <<"false">>;
              is_list(V) ->
-                 V0 = iolist_to_binary(lists:join(<<$,>>, V)),
+                 Items = lists:map(fun(E) ->
+                     if
+                         is_integer(E) ->
+                             integer_to_binary(E);
+                         is_float(E) ->
+                             float_to_binary(E);
+                         is_binary(E) ->
+                             <<$", E/binary, $">>;
+                         is_boolean(E) andalso E ->
+                             <<"true">>;
+                         is_boolean(E) andalso not E ->
+                             <<"false">>
+                     end
+                                   end, V),
+                 V0 = iolist_to_binary(lists:join(<<$,>>, Items)),
                  <<$[, V0/binary, $]>>
          end,
     Item = <<$", K/binary, $", $:, V1/binary>>,