diff --git a/apps/iot/include/iot.hrl b/apps/iot/include/iot.hrl
index ff030c9..7b52175 100644
--- a/apps/iot/include/iot.hrl
+++ b/apps/iot/include/iot.hrl
@@ -52,8 +52,8 @@
     status
 }).
 
-%% 终端指标收集
--record(terminal_metric, {
+%% 微服务指标收集
+-record(service_metric, {
     %% 标识
     symbol :: binary(),
     %% 名称
@@ -121,8 +121,7 @@
     model :: binary(),
     %% 所在单元ID，管理系统负责
     cell_id :: integer(),
-    %% 指标, 终端指标涉及到查询效率和更新效率的问题，因此合并到一起
-    metrics = [] :: [#terminal_metric{}],
+
     %% 终端状态
     status = 0 :: integer(),
     %% 最后上线时间
@@ -146,5 +145,8 @@
     %% 执行次数
     execute_count = 0,
     %% 部署时间
-    deploy_ts = 0 :: integer()
+    deploy_ts = 0 :: integer(),
+    %% 指标, 终端指标涉及到查询效率和更新效率的问题，因此合并到一起
+    metrics = [] :: [#service_metric{}],
+    status = 0
 }).
\ No newline at end of file
diff --git a/apps/iot/src/model/microservice_model.erl b/apps/iot/src/model/microservice_model.erl
new file mode 100644
index 0000000..8479cc0
--- /dev/null
+++ b/apps/iot/src/model/microservice_model.erl
@@ -0,0 +1,81 @@
+%%%-------------------------------------------------------------------
+%%% @author licheng5
+%%% @copyright (C) 2021, <COMPANY>
+%%% @doc
+%%%
+%%% @end
+%%% Created : 27. 4月 2021 下午4:38
+%%%-------------------------------------------------------------------
+-module(microservice_model).
+-author("licheng5").
+-include("iot.hrl").
+-include_lib("stdlib/include/qlc.hrl").
+
+%% API
+-export([get_services/1, get_service/2, add_service/1, change_status/2, delete/1, table_size/0]).
+
+get_service(HostId, ServiceName) when is_binary(HostId), is_binary(ServiceName) ->
+    Fun = fun() ->
+        Q = qlc:q([E || E <- mnesia:table(microservice), E#microservice.host_id =:= HostId, E#microservice.name =:= ServiceName]),
+        qlc:e(Q)
+          end,
+    case mnesia:transaction(Fun) of
+        [Service] ->
+            {ok, Service};
+        _ ->
+            undefined
+    end.
+
+get_services(HostId) when is_binary(HostId) ->
+    Fun = fun() ->
+        Q = qlc:q([E || E <- mnesia:table(microservice), E#microservice.host_id =:= HostId]),
+        qlc:e(Q)
+          end,
+    case mnesia:transaction(Fun) of
+        Services when is_list(Services) ->
+            Services;
+        _ ->
+            []
+    end.
+
+add_service(Service = #microservice{}) ->
+    case mnesia:transaction(fun() -> mnesia:write(microservice, Service, write) end) of
+        {atomic, _} ->
+            ok;
+        {aborted, Error} ->
+            {error, Error}
+    end.
+
+change_status(ServiceId, Status) when is_binary(ServiceId), is_integer(Status) ->
+    Fun = fun() ->
+        case mnesia:read(microservice, ServiceId) of
+            [] ->
+                mnesia:abort(<<"host not found">>);
+            [Service] ->
+                NService = Service#microservice{status = Status},
+                mnesia:write(microservice, NService, write)
+        end
+          end,
+    case mnesia:transaction(Fun) of
+        {atomic, ok} ->
+            ok;
+        {aborted, Reason} ->
+            {error, Reason}
+    end.
+
+-spec delete(HostId :: binary()) -> ok | {error, Reason :: any()}.
+delete(ServiceId) when is_binary(ServiceId) ->
+    case mnesia:transaction(fun() -> mnesia:delete(microservice, ServiceId, write) end) of
+        {atomic, ok} ->
+            ok;
+        {aborted, Reason} ->
+            {error, Reason}
+    end.
+
+%% 获取app表的数据大小
+table_size() ->
+    mnesia:table_info(microservice, size).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% helper methods
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ No newline at end of file
diff --git a/apps/iot/src/model/terminal_model.erl b/apps/iot/src/model/terminal_model.erl
index 8192fe4..1a25000 100644
--- a/apps/iot/src/model/terminal_model.erl
+++ b/apps/iot/src/model/terminal_model.erl
@@ -89,13 +89,13 @@ update_metric(TerminalId, MetricName, MetricSymbol, MetricValue) when is_binary(
                 mnesia:abort(<<"terminal not found">>);
             [Terminal = #terminal{metrics = Metrics}] ->
                 Ts = iot_util:current_time(),
-                NMetrics = case lists:any(fun(#terminal_metric{symbol = Symbol}) -> Symbol =:= MetricSymbol end, Metrics) of
+                NMetrics = case lists:any(fun(#service_metric{symbol = Symbol}) -> Symbol =:= MetricSymbol end, Metrics) of
                                true ->
-                                   lists:map(fun(Metric=#terminal_metric{symbol = Symbol, queue = Q}) ->
+                                   lists:map(fun(Metric=#service_metric{symbol = Symbol, queue = Q}) ->
                                        case Symbol =:= MetricSymbol of
                                            true ->
                                                Q1 = iot_util:queue_limited_in({Ts, MetricValue}, Q, 100),
-                                               Metric#terminal_metric{
+                                               Metric#service_metric{
                                                    name = MetricName,
                                                    last_value = MetricValue,
                                                    update_ts = Ts,
@@ -107,7 +107,7 @@ update_metric(TerminalId, MetricName, MetricSymbol, MetricValue) when is_binary(
                                              end, Metrics);
                                false ->
                                    Q0 = queue:new(),
-                                   Metric = #terminal_metric{
+                                   Metric = #service_metric{
                                        name = MetricName,
                                        symbol = MetricSymbol,
                                        last_value = MetricValue,