diff --git a/apps/iot/src/iot_host.erl b/apps/iot/src/iot_host.erl
index d8adbfa..3eea328 100644
--- a/apps/iot/src/iot_host.erl
+++ b/apps/iot/src/iot_host.erl
@@ -22,7 +22,7 @@
 
 %% API
 -export([start_link/2, get_name/1, get_alias_name/1, get_pid/1, handle/2, activate/2]).
--export([get_metric/1, get_status/1]).
+-export([get_metric/1, get_status/1, kill/1]).
 %% 通讯相关
 -export([pub/3, attach_channel/2, command/3]).
 -export([deploy_container/3, start_container/2, stop_container/2, remove_container/2, kill_container/2, config_container/3, get_containers/1, await_reply/2]).
@@ -61,6 +61,15 @@ get_alias_name(HostId0) when is_integer(HostId0) ->
     HostId = integer_to_binary(HostId0),
     binary_to_atom(<<"iot_host_id:", HostId/binary>>).
 
+-spec kill(UUID :: binary()) -> no_return().
+kill(UUID) when is_binary(UUID) ->
+    case whereis(get_name(UUID)) of
+        undefined ->
+            ok;
+        Pid ->
+            exit(Pid, kill)
+    end.
+
 %% 处理消息
 -spec handle(Pid :: pid(), Packet :: {atom(), any()}) -> no_return().
 handle(Pid, Packet) when is_pid(Pid) ->
diff --git a/apps/iot/src/iot_host_sup.erl b/apps/iot/src/iot_host_sup.erl
index 26d875e..16f8b4e 100644
--- a/apps/iot/src/iot_host_sup.erl
+++ b/apps/iot/src/iot_host_sup.erl
@@ -35,10 +35,23 @@ ensured_host_started(UUID) when is_binary(UUID) ->
             {ok, Pid}
     end.
 
-delete_host(UUID) when is_binary(UUID) ->
+delete_host(UUID) ->
     Id = iot_host:get_name(UUID),
-    ok = supervisor:terminate_child(?MODULE, Id),
-    supervisor:delete_child(?MODULE, Id).
+    case supervisor:terminate_child(?MODULE, Id) of
+        {error, running} ->
+            iot_host:kill(UUID),
+            ok;
+        _ ->
+            ok
+    end,
+    case supervisor:delete_child(?MODULE, Id) of
+        {error, running} ->
+            %% ensure killed then delete again
+            iot_host:kill(UUID),
+            supervisor:delete_child(?MODULE, Id);
+        _ ->
+            ok
+    end.
 
 child_spec(UUID) ->
     Id = iot_host:get_name(UUID),