diff --git a/apps/iot/include/iot.hrl b/apps/iot/include/iot.hrl
index aa426ca..9f353da 100644
--- a/apps/iot/include/iot.hrl
+++ b/apps/iot/include/iot.hrl
@@ -41,6 +41,8 @@
 
 %% 事件类型
 -define(EVENT_DEVICE, 16#01).
+%% 主机的相关事件
+-define(EVENT_HOST, 16#02).
 
 %% 缓存数据库表
 -record(kv, {
diff --git a/apps/iot/src/database/device_bo.erl b/apps/iot/src/database/device_bo.erl
index eab0e5f..1fa657b 100644
--- a/apps/iot/src/database/device_bo.erl
+++ b/apps/iot/src/database/device_bo.erl
@@ -31,6 +31,12 @@ get_device_by_uuid(DeviceUUID) when is_binary(DeviceUUID) ->
     mysql_pool:get_row(mysql_iot, <<"SELECT * FROM device WHERE device_uuid = ? LIMIT 1">>, [DeviceUUID]).
 
 %% 修改主机的状态
--spec change_status(DeviceId :: integer(), Status :: integer()) -> {ok, AffectedRows :: integer()} | {error, Reason :: any()}.
-change_status(DeviceId, Status) when is_integer(DeviceId), is_integer(Status) ->
-    mysql_pool:update_by(mysql_iot, <<"UPDATE device SET status = ? WHERE id = ? LIMIT 1">>, [Status, DeviceId]).
\ No newline at end of file
+-spec change_status(DeviceUUID :: binary(), Status :: integer()) -> {ok, AffectedRows :: integer()} | {error, Reason :: any()}.
+change_status(DeviceUUID, Status) when is_binary(DeviceUUID), is_integer(Status) ->
+    case mysql_pool:update_by(mysql_iot, <<"UPDATE device SET status = ? WHERE device_uuid = ? LIMIT 1">>, [Status, DeviceUUID]) of
+        Result = {ok, _} ->
+            event_logs_bo:insert(?EVENT_DEVICE, DeviceUUID, Status),
+            Result;
+        Error ->
+            Error
+    end.
\ No newline at end of file
diff --git a/apps/iot/src/database/event_logs_bo.erl b/apps/iot/src/database/event_logs_bo.erl
new file mode 100644
index 0000000..87f98c8
--- /dev/null
+++ b/apps/iot/src/database/event_logs_bo.erl
@@ -0,0 +1,25 @@
+%%%-------------------------------------------------------------------
+%%% @author aresei
+%%% @copyright (C) 2023, <COMPANY>
+%%% @doc
+%%%
+%%% @end
+%%% Created : 16. 5月 2023 12:48
+%%%-------------------------------------------------------------------
+-module(event_logs_bo).
+-author("aresei").
+-include("iot.hrl").
+
+-export([insert/3]).
+
+%% API
+
+-spec insert(EventType :: integer(), AssocUUID :: binary(), Status :: integer()) ->
+    {ok, InsertId :: integer()} | {error, Reason :: any()}.
+insert(EventType, AssocUUID, Status) when is_integer(EventType), is_binary(AssocUUID), is_integer(Status) ->
+    mysql_pool:insert(mysql_iot, <<"event_logs">>, #{
+        <<"event_type">> => EventType,
+        <<"assoc_uuid">> => AssocUUID,
+        <<"status">> => Status,
+        <<"created_at">> => calendar:local_time()
+    }, true).
\ No newline at end of file
diff --git a/apps/iot/src/database/host_bo.erl b/apps/iot/src/database/host_bo.erl
index d159e88..2d1cce3 100644
--- a/apps/iot/src/database/host_bo.erl
+++ b/apps/iot/src/database/host_bo.erl
@@ -33,4 +33,10 @@ get_host_by_id(HostId) when is_integer(HostId) ->
 %% 修改主机的状态
 -spec change_status(UUID :: binary(), Status :: integer()) -> {ok, AffectedRows :: integer()} | {error, Reason :: any()}.
 change_status(UUID, Status) when is_binary(UUID), is_integer(Status) ->
-    mysql_pool:update_by(mysql_iot, <<"UPDATE host SET status = ? WHERE uuid = ? LIMIT 1">>, [Status, UUID]).
\ No newline at end of file
+   case mysql_pool:update_by(mysql_iot, <<"UPDATE host SET status = ? WHERE uuid = ? LIMIT 1">>, [Status, UUID]) of
+       Result = {ok, _} ->
+           event_logs_bo:insert(?EVENT_HOST, UUID, Status),
+           Result;
+       Error ->
+           Error
+   end.
diff --git a/apps/iot/src/iot_device.erl b/apps/iot/src/iot_device.erl
index ebbfa2b..8f607d7 100644
--- a/apps/iot/src/iot_device.erl
+++ b/apps/iot/src/iot_device.erl
@@ -1,5 +1,4 @@
 %%%-------------------------------------------------------------------
-%%% @author aresei
 %%% @copyright (C) 2023, <COMPANY>
 %%% @doc
 %%%
@@ -28,7 +27,6 @@
 -define(STATE_ACTIVATED, activated).
 
 -record(state, {
-    device_id :: integer(),
     device_uuid :: binary(),
     status = ?DEVICE_OFFLINE
 }).
@@ -88,15 +86,15 @@ init([DeviceUUID]) when is_binary(DeviceUUID) ->
      end;
 init([DeviceInfo]) when is_map(DeviceInfo) ->
     init0(DeviceInfo).
-init0(#{<<"device_uuid">> := DeviceUUID, <<"status">> := Status, <<"authorize_status">> := AuthorizeStatus, <<"id">> := DeviceId}) ->
+init0(#{<<"device_uuid">> := DeviceUUID, <<"status">> := Status, <<"authorize_status">> := AuthorizeStatus}) ->
     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}};
+            {ok, ?STATE_ACTIVATED, #state{device_uuid = DeviceUUID, status = Status}};
         false ->
-            {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_OFFLINE),
+            {ok, _} = device_bo:change_status(DeviceUUID, ?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}}
+            {ok, ?STATE_DENIED, #state{device_uuid = DeviceUUID, status = ?DEVICE_OFFLINE}}
     end.
 
 %% @private
@@ -123,15 +121,15 @@ handle_event({call, From}, is_activated, StateName, State = #state{}) ->
     {keep_state, State, [{reply, From, StateName =:= ?STATE_ACTIVATED}]};
 
 %% 改变数据库的状态, 离线状态事件必须执行(主动触发离线的情况很少，不会造成数据库眼里)
-handle_event(cast, {change_status, ?DEVICE_OFFLINE}, ?STATE_ACTIVATED, State = #state{device_id = DeviceId}) ->
-    {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_OFFLINE),
+handle_event(cast, {change_status, ?DEVICE_OFFLINE}, ?STATE_ACTIVATED, State = #state{device_uuid = DeviceUUID}) ->
+    {ok, _} = device_bo:change_status(DeviceUUID, ?DEVICE_OFFLINE),
     {keep_state, State#state{status = ?DEVICE_OFFLINE}};
 %% 改变为在线状态，但是数据库中的状态已经是在线状态，忽略
 handle_event(cast, {change_status, ?DEVICE_ONLINE}, ?STATE_ACTIVATED, State = #state{status = ?DEVICE_ONLINE}) ->
     {keep_state, State};
 %% 其他情况下需要修改数据状态为在线状态
-handle_event(cast, {change_status, ?DEVICE_ONLINE}, ?STATE_ACTIVATED, State = #state{device_id = DeviceId}) ->
-    {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_ONLINE),
+handle_event(cast, {change_status, ?DEVICE_ONLINE}, ?STATE_ACTIVATED, State = #state{device_uuid = DeviceUUID}) ->
+    {ok, _} = device_bo:change_status(DeviceUUID, ?DEVICE_ONLINE),
     {keep_state, State#state{status = ?DEVICE_ONLINE}};
 %% 其他状态下不存在在线状态的变化
 handle_event(cast, {change_status, _}, _, State = #state{}) ->
@@ -141,13 +139,13 @@ 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, <<"status">> := Status}} ->
+        {ok, #{<<"authorize_status">> := AuthorizeStatus, <<"status">> := Status}} ->
             case AuthorizeStatus =:= ?DEVICE_AUTH_AUTHED of
                 true ->
-                    {next_state, ?STATE_ACTIVATED, State#state{device_id = DeviceId, status = Status}};
+                    {next_state, ?STATE_ACTIVATED, State#state{status = Status}};
                 false ->
-                    {ok, _} = device_bo:change_status(DeviceId, ?DEVICE_OFFLINE),
-                    {next_state, ?STATE_DENIED, State#state{device_id = DeviceId, status = ?DEVICE_OFFLINE}}
+                    {ok, _} = device_bo:change_status(DeviceUUID, ?DEVICE_OFFLINE),
+                    {next_state, ?STATE_DENIED, State#state{status = ?DEVICE_OFFLINE}}
             end;
         undefined ->
             lager:warning("[iot_device] device uuid: ~p, loaded from mysql failed", [DeviceUUID]),
@@ -155,9 +153,9 @@ handle_event(cast, reload, _, State = #state{device_uuid = DeviceUUID}) ->
     end;
 
 %% 处理授权
-handle_event(cast, {auth, false}, ?STATE_DENIED, State = #state{device_id = DeviceId, device_uuid = DeviceUUID}) ->
+handle_event(cast, {auth, false}, ?STATE_DENIED, State = #state{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),
+    {ok, _} = device_bo:change_status(DeviceUUID, ?DEVICE_OFFLINE),
     {keep_state, State};
 
 handle_event(cast, {auth, true}, ?STATE_DENIED, State) ->
@@ -166,9 +164,9 @@ handle_event(cast, {auth, true}, ?STATE_DENIED, 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_id = DeviceId, device_uuid = DeviceUUID}) ->
+handle_event(cast, {auth, false}, ?STATE_ACTIVATED, State = #state{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),
+    {ok, _} = device_bo:change_status(DeviceUUID, ?DEVICE_OFFLINE),
     {next_state, ?STATE_DENIED, State#state{status = ?DEVICE_OFFLINE}}.
 
 %% @private