diff --git a/apps/iot/src/iot_device.erl b/apps/iot/src/iot_device.erl
index 2ebdd86..ebbfa2b 100644
--- a/apps/iot/src/iot_device.erl
+++ b/apps/iot/src/iot_device.erl
@@ -90,13 +90,13 @@ init([DeviceInfo]) when is_map(DeviceInfo) ->
     init0(DeviceInfo).
 init0(#{<<"device_uuid">> := DeviceUUID, <<"status">> := Status, <<"authorize_status">> := AuthorizeStatus, <<"id">> := DeviceId}) ->
     case AuthorizeStatus =:= ?DEVICE_AUTH_AUTHED of
+        true ->
+            lager:debug("[iot_device] started device: ~p, state_name: ~p, status: ~p", [DeviceUUID, ?STATE_ACTIVATED, Status]),
+            {ok, ?STATE_ACTIVATED, #state{device_id = DeviceId, device_uuid = DeviceUUID, status = Status}};
         false ->
             {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_OFFLINE),
             lager:debug("[iot_device] started device: ~p, state_name: ~p, status: ~p", [DeviceUUID, ?STATE_DENIED, ?DEVICE_OFFLINE]),
-            {ok, ?STATE_DENIED, #state{device_id = DeviceId, device_uuid = DeviceUUID, status = ?DEVICE_OFFLINE}};
-        true ->
-            lager:debug("[iot_device] started device: ~p, state_name: ~p, status: ~p", [DeviceUUID, ?STATE_ACTIVATED, Status]),
-            {ok, ?STATE_ACTIVATED, #state{device_id = DeviceId, device_uuid = DeviceUUID, status = Status}}
+            {ok, ?STATE_DENIED, #state{device_id = DeviceId, device_uuid = DeviceUUID, status = ?DEVICE_OFFLINE}}
     end.
 
 %% @private
@@ -141,13 +141,13 @@ handle_event(cast, {change_status, _}, _, State = #state{}) ->
 handle_event(cast, reload, _, State = #state{device_uuid = DeviceUUID}) ->
     lager:debug("[iot_device] will reload: ~p", [DeviceUUID]),
     case device_bo:get_device_by_uuid(DeviceUUID) of
-        {ok, #{<<"authorize_status">> := AuthorizeStatus, <<"id">> := DeviceId}} ->
+        {ok, #{<<"authorize_status">> := AuthorizeStatus, <<"id">> := DeviceId, <<"status">> := Status}} ->
             case AuthorizeStatus =:= ?DEVICE_AUTH_AUTHED of
+                true ->
+                    {next_state, ?STATE_ACTIVATED, State#state{device_id = DeviceId, status = Status}};
                 false ->
                     {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_OFFLINE),
-                    {next_state, ?STATE_DENIED, State#state{device_id = DeviceId}};
-                true  ->
-                    {next_state, ?STATE_ACTIVATED, State#state{device_id = DeviceId}}
+                    {next_state, ?STATE_DENIED, State#state{device_id = DeviceId, status = ?DEVICE_OFFLINE}}
             end;
         undefined ->
             lager:warning("[iot_device] device uuid: ~p, loaded from mysql failed", [DeviceUUID]),
@@ -155,17 +155,20 @@ handle_event(cast, reload, _, State = #state{device_uuid = DeviceUUID}) ->
     end;
 
 %% 处理授权
-handle_event(cast, {auth, false}, ?STATE_DENIED, State = #state{device_uuid = DeviceUUID}) ->
+handle_event(cast, {auth, false}, ?STATE_DENIED, State = #state{device_id = DeviceId, device_uuid = DeviceUUID}) ->
     lager:debug("[iot_device] device_uuid: ~p, auth: false, will keep state_name: ~p", [DeviceUUID, ?STATE_DENIED]),
+    {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_OFFLINE),
     {keep_state, State};
+
 handle_event(cast, {auth, true}, ?STATE_DENIED, State) ->
     {next_state, ?STATE_ACTIVATED, State};
 
 handle_event(cast, {auth, true}, ?STATE_ACTIVATED, State = #state{device_uuid = DeviceUUID}) ->
     lager:debug("[iot_device] device_uuid: ~p, auth: true, will keep state_name: ~p", [DeviceUUID, ?STATE_ACTIVATED]),
     {keep_state, State};
-handle_event(cast, {auth, false}, ?STATE_ACTIVATED, State = #state{device_uuid = DeviceUUID}) ->
+handle_event(cast, {auth, false}, ?STATE_ACTIVATED, State = #state{device_id = DeviceId, device_uuid = DeviceUUID}) ->
     lager:debug("[iot_device] device_uuid: ~p, auth: false, state_name from: ~p, to: ~p", [DeviceUUID, ?STATE_ACTIVATED, ?STATE_DENIED]),
+    {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_OFFLINE),
     {next_state, ?STATE_DENIED, State#state{status = ?DEVICE_OFFLINE}}.
 
 %% @private
diff --git a/apps/iot/src/iot_host.erl b/apps/iot/src/iot_host.erl
index 1d3cc41..42760ab 100644
--- a/apps/iot/src/iot_host.erl
+++ b/apps/iot/src/iot_host.erl
@@ -266,27 +266,20 @@ handle_event({call, From}, {create_session, PubKey}, StateName, State = #state{h
     EncReply = iot_cipher_rsa:encode(Reply, PubKey),
     {ok, AffectedRow} = host_bo:change_status(UUID, ?HOST_ONLINE),
     lager:debug("[iot_host] host_id(~p) uuid: ~p, create_session, will change status, affected_row: ~p", [StateName, UUID, AffectedRow]),
-    change_devices_status(HostId, ?DEVICE_ONLINE),
 
     {next_state, ?STATE_SESSION, State, [{reply, From, {ok, <<10:8, EncReply/binary>>}}]};
 
-%% 设备相关
-handle_event({call, From}, {reload_device, DeviceUUID}, StateName, State) ->
+%% 重新加载设备信息
+handle_event({call, From}, {reload_device, DeviceUUID}, _, State) ->
     case iot_device_sup:ensured_device_started(DeviceUUID) of
         {ok, DevicePid} ->
             iot_device:reload(DevicePid),
-            case StateName =:= ?STATE_SESSION of
-                true ->
-                    iot_device:change_status(DevicePid, ?DEVICE_ONLINE);
-                false ->
-                    iot_device:change_status(DevicePid, ?DEVICE_OFFLINE)
-            end,
-
             {keep_state, State, [{reply, From, ok}]};
         {error, Reason} ->
             {keep_state, State, [{reply, From, {error, Reason}}]}
     end;
 
+%% 删除设备
 handle_event({call, From}, {delete_device, DeviceUUID}, _, State) ->
     case iot_device:get_pid(DeviceUUID) of
         undefined ->
@@ -296,16 +289,11 @@ handle_event({call, From}, {delete_device, DeviceUUID}, _, State) ->
     end,
     {keep_state, State, [{reply, From, ok}]};
 
-handle_event({call, From}, {activate_device, DeviceUUID, Auth}, StateName, State) ->
+%% 激活设备
+handle_event({call, From}, {activate_device, DeviceUUID, Auth}, _, State) ->
     case iot_device_sup:ensured_device_started(DeviceUUID) of
         {ok, DevicePid} ->
             iot_device:auth(DevicePid, Auth),
-            case StateName =:= ?STATE_SESSION of
-                true ->
-                    iot_device:change_status(DevicePid, ?DEVICE_ONLINE);
-                false ->
-                    iot_device:change_status(DevicePid, ?DEVICE_OFFLINE)
-            end,
 
             {keep_state, State, [{reply, From, ok}]};
         {error, Reason} ->
@@ -450,6 +438,7 @@ code_change(_OldVsn, StateName, State = #state{}, _Extra) ->
 %%% Internal functions
 %%%===================================================================
 
+%% 修改设备的状态
 change_devices_status(HostId, NewStatus) when is_integer(HostId), is_integer(NewStatus) ->
     {ok, Devices} = device_bo:get_host_devices(HostId),
     lists:foreach(fun(DeviceUUID) ->
@@ -474,7 +463,7 @@ handle_data(#{<<"device_uuid">> := DeviceUUID, <<"service_name">> := ServiceName
                     NTags = Tags#{<<"uuid">> => UUID, <<"service_name">> => ServiceName, <<"device_uuid">> => DeviceUUID},
                     influx_client:write_data(DeviceUUID, NTags, FieldsList, Timestamp),
 
-                    iot_device:change_status(DevicePid, 1);
+                    iot_device:change_status(DevicePid, ?DEVICE_ONLINE);
                 false ->
                     lager:notice("[iot_host] uuid: ~p, device_uuid: ~p, device is not activated", [UUID, DeviceUUID])
             end