diff --git a/src/host/iot_host.erl b/src/host/iot_host.erl
index d10254d..4682f04 100644
--- a/src/host/iot_host.erl
+++ b/src/host/iot_host.erl
@@ -95,44 +95,37 @@ attach_channel(Pid, ChannelPid) when is_pid(Pid), is_pid(ChannelPid) ->
 
 -spec get_containers(Pid :: pid()) -> {ok, Ref :: reference()} | {error, Reason :: any()}.
 get_containers(Pid) when is_pid(Pid) ->
-    Request = #'JsonRpcRequest'{method = <<"get_containers">>, params = erlang:term_to_binary(#{} )},
-    gen_statem:call(Pid, {jsonrpc_call, self(), Request}).
+    gen_statem:call(Pid, {jsonrpc_call, self(), {<<"get_containers">>, #{}}}).
 
 -spec config_container(Pid :: pid(), ContainerName :: binary(), ConfigJson :: binary()) -> {ok, Ref :: reference()} | {error, Reason :: any()}.
 config_container(Pid, ContainerName, ConfigJson) when is_pid(Pid), is_binary(ContainerName), is_binary(ConfigJson) ->
-    Request = #'JsonRpcRequest'{method = <<"config_container">>,
-        params = erlang:term_to_binary(#{<<"container_name">> => ContainerName, <<"config">> => ConfigJson})},
-    gen_statem:call(Pid, {jsonrpc_call, self(), Request}).
+    Params = #{<<"container_name">> => ContainerName, <<"config">> => ConfigJson},
+    gen_statem:call(Pid, {jsonrpc_call, self(), {<<"config_container">>, Params}}).
 
 -spec deploy_container(Pid :: pid(), TaskId :: integer(), Config :: map()) -> {ok, Ref :: reference()} | {error, Reason :: any()}.
 deploy_container(Pid, TaskId, Config) when is_pid(Pid), is_integer(TaskId), is_map(Config) ->
-    Request = #'JsonRpcRequest'{method = <<"deploy">>,
-        params = erlang:term_to_binary(#{<<"task_id">> => TaskId, <<"config">> => Config})},
-    gen_statem:call(Pid, {jsonrpc_call, self(), Request}).
+    Params = #{<<"task_id">> => TaskId, <<"config">> => Config},
+    gen_statem:call(Pid, {jsonrpc_call, self(), {<<"deploy">>, Params}}).
 
 -spec start_container(Pid :: pid(), ContainerName :: binary()) -> {ok, Ref :: reference()} | {error, Reason :: any()}.
 start_container(Pid, ContainerName) when is_pid(Pid), is_binary(ContainerName) ->
-    Request = #'JsonRpcRequest'{method = <<"start_container">>,
-        params = erlang:term_to_binary(#{<<"container_name">> => ContainerName})},
-    gen_statem:call(Pid, {jsonrpc_call, self(), Request}).
+    Params = #{<<"container_name">> => ContainerName},
+    gen_statem:call(Pid, {jsonrpc_call, self(), {<<"start_container">>, Params}}).
 
 -spec stop_container(Pid :: pid(), ContainerName :: binary()) -> {ok, Ref :: reference()} | {error, Reason :: any()}.
 stop_container(Pid, ContainerName) when is_pid(Pid), is_binary(ContainerName) ->
-    Request = #'JsonRpcRequest'{method = <<"stop_container">>,
-        params = erlang:term_to_binary(#{<<"container_name">> => ContainerName})},
-    gen_statem:call(Pid, {jsonrpc_call, self(), Request}).
+    Params = #{<<"container_name">> => ContainerName},
+    gen_statem:call(Pid, {jsonrpc_call, self(), {<<"stop_container">>, Params}}).
 
 -spec kill_container(Pid :: pid(), ContainerName :: binary()) -> {ok, Ref :: reference()} | {error, Reason :: any()}.
 kill_container(Pid, ContainerName) when is_pid(Pid), is_binary(ContainerName) ->
-    Request = #'JsonRpcRequest'{method = <<"kill_container">>,
-        params = erlang:term_to_binary(#{<<"container_name">> => ContainerName})},
-    gen_statem:call(Pid, {jsonrpc_call, self(), Request}).
+    Params = #{<<"container_name">> => ContainerName},
+    gen_statem:call(Pid, {jsonrpc_call, self(), {<<"kill_container">>, Params}}).
 
 -spec remove_container(Pid :: pid(), ContainerName :: binary()) -> {ok, Ref :: reference()} | {error, Reason :: any()}.
 remove_container(Pid, ContainerName) when is_pid(Pid), is_binary(ContainerName) ->
-    Request = #'JsonRpcRequest'{method = <<"remove_container">>,
-        params = erlang:term_to_binary(#{<<"container_name">> => ContainerName})},
-    gen_statem:call(Pid, {jsonrpc_call, self(), Request}).
+    Params = #{<<"container_name">> => ContainerName},
+    gen_statem:call(Pid, {jsonrpc_call, self(), {<<"remove_container">>, Params}}).
 
 -spec await_reply(Ref :: reference(), Timeout :: integer()) -> {ok, Result :: binary()} | {error, Reason :: binary()}.
 await_reply(Ref, Timeout) when is_reference(Ref), is_integer(Timeout) ->
diff --git a/src/transport/tcp/tcp_channel.erl b/src/transport/tcp/tcp_channel.erl
index 2c0c41f..b7a5513 100644
--- a/src/transport/tcp/tcp_channel.erl
+++ b/src/transport/tcp/tcp_channel.erl
@@ -44,8 +44,8 @@ command(Pid, CommandType, Command) when is_pid(Pid), is_integer(CommandType), is
     gen_server:cast(Pid, {command, CommandType, Command}).
 
 %% 向通道中写入消息
--spec jsonrpc_call(Pid :: pid(), ReceiverPid :: pid(), Request :: #'JsonRpcRequest'{}) -> Ref :: reference().
-jsonrpc_call(Pid, ReceiverPid, Request = #'JsonRpcRequest'{}) when is_pid(Pid), is_pid(ReceiverPid) ->
+-spec jsonrpc_call(Pid :: pid(), ReceiverPid :: pid(), Request :: {Method :: binary(), Params :: any()}) -> Ref :: reference().
+jsonrpc_call(Pid, ReceiverPid, Request = {Method, _Params}) when is_pid(Pid), is_pid(ReceiverPid), is_binary(Method) ->
     Ref = make_ref(),
     gen_server:cast(Pid, {jsonrpc_call, ReceiverPid, Ref, Request}),
     Ref.
@@ -90,7 +90,9 @@ handle_cast({command, CommandType, Command}, State = #state{transport = Transpor
     {noreply, State};
 
 %% 推送消息
-handle_cast({jsonrpc_call, ReceiverPid, Ref, Request = #'JsonRpcRequest'{}}, State = #state{transport = Transport, socket = Socket, packet_id = PacketId, inflight = Inflight}) ->
+handle_cast({jsonrpc_call, ReceiverPid, Ref, {Method, Params}}, State = #state{transport = Transport, socket = Socket, packet_id = PacketId, inflight = Inflight})
+    when is_binary(Method) ->
+    Request = #'JsonRpcRequest'{method = Method, params = erlang:term_to_binary(Params)},
     Encoded = message_pb:encode_msg(Request, 'JsonRpcRequest'),
     EncRequest = <<?MESSAGE_JSONRPC_REQUEST, Encoded/binary>>,
     Transport:send(Socket, <<?PACKET_REQUEST, PacketId:32, EncRequest/binary>>),