diff --git a/api/chat.py b/api/chat.py
index 647b579..06a53c0 100644
--- a/api/chat.py
+++ b/api/chat.py
@@ -31,6 +31,7 @@ class Command(enum.IntEnum):
     ADD_SUPER_CHAT = 5
     DEL_SUPER_CHAT = 6
     UPDATE_TRANSLATION = 7
+    FATAL_ERROR = 8
 
 
 class ContentType(enum.IntEnum):
@@ -38,6 +39,10 @@ class ContentType(enum.IntEnum):
     EMOTICON = 1
 
 
+class FatalErrorType(enum.IntEnum):
+    AUTH_CODE_ERROR = 1
+
+
 def make_message_body(cmd, data):
     return json.dumps(
         {
diff --git a/api/open_live.py b/api/open_live.py
index 803c0ae..325cd2a 100644
--- a/api/open_live.py
+++ b/api/open_live.py
@@ -35,7 +35,7 @@ class TransportError(Exception):
 class BusinessError(Exception):
     """业务返回码错误"""
     def __init__(self, data: dict):
-        super().__init__(f"message={data['message']}, request_id={data['request_id']}")
+        super().__init__(f"code={data['code']}, message={data['message']}, request_id={data['request_id']}")
         self.data = data
 
     @property
@@ -115,19 +115,22 @@ async def _read_response(req_ctx_mgr: AsyncContextManager[aiohttp.ClientResponse
 
 
 def _validate_auth_code(auth_code):
-    if re.fullmatch(r'[0-9A-Z]{11,16}', auth_code):
+    # 我也不知道是不是一定是这个格式，先临时这么处理
+    if re.fullmatch(r'[0-9A-Z]{12,14}', auth_code):
         return
-
-    logger.warning('Auth code error! auth_code=%s', auth_code)
     raise BusinessError({
         'code': 7007,
         'message': '身份码错误',
-        'data': {},
-        'request_id': '0'
+        'request_id': '0',
+        'data': None
     })
 
 
 class _OpenLiveHandlerBase(api.base.ApiHandler):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.res: Optional[dict] = None
+
     def prepare(self):
         super().prepare()
         if not isinstance(self.json_args, dict):
@@ -147,14 +150,14 @@ class _PublicHandlerBase(_OpenLiveHandlerBase):
 
     async def post(self):
         try:
-            res = await request_open_live_or_common_server(
+            self.res = await request_open_live_or_common_server(
                 self._OPEN_LIVE_URL, self._COMMON_SERVER_URL, self.json_args
             )
         except TransportError:
             raise tornado.web.HTTPError(500)
         except BusinessError as e:
-            res = e.data
-        self.write(res)
+            self.res = e.data
+        self.write(self.res)
 
 
 class _PrivateHandlerBase(_OpenLiveHandlerBase):
@@ -167,21 +170,41 @@ class _PrivateHandlerBase(_OpenLiveHandlerBase):
             raise tornado.web.HTTPError(501)
 
         try:
-            res = await _request_open_live(self._OPEN_LIVE_URL, self.json_args)
+            self.res = await _request_open_live(self._OPEN_LIVE_URL, self.json_args)
         except TransportError:
             raise tornado.web.HTTPError(500)
         except BusinessError as e:
-            res = e.data
-        self.write(res)
+            self.res = e.data
+        self.write(self.res)
 
 
-class StartGamePublicHandler(_PublicHandlerBase):
+class _StartGameMixin(_OpenLiveHandlerBase):
     _OPEN_LIVE_URL = START_GAME_OPEN_LIVE_URL
     _COMMON_SERVER_URL = START_GAME_COMMON_SERVER_URL
 
+    async def post(self):
+        await super().post()  # noqa
+        if self.res is None:
+            return
 
-class StartGamePrivateHandler(_PrivateHandlerBase):
-    _OPEN_LIVE_URL = START_GAME_OPEN_LIVE_URL
+        try:
+            room_id = self.res['data']['anchor_info']['room_id']
+        except (TypeError, KeyError):
+            room_id = None
+        code = self.res['code']
+        logger.info('room_id=%s start game res: %s %s', room_id, code, self.res['message'])
+        if code == 7007:
+            # 身份码错误
+            # 让我看看是哪个混蛋把房间ID、UID当做身份码
+            logger.warning('Auth code error! auth_code=%s', self.json_args.get('code', None))
+
+
+class StartGamePublicHandler(_StartGameMixin, _PublicHandlerBase):
+    pass
+
+
+class StartGamePrivateHandler(_StartGameMixin, _PrivateHandlerBase):
+    pass
 
 
 class EndGamePublicHandler(_PublicHandlerBase):
diff --git a/frontend/src/api/chat/ChatClientDirectOpenLive.js b/frontend/src/api/chat/ChatClientDirectOpenLive.js
index b14625f..dd722a3 100644
--- a/frontend/src/api/chat/ChatClientDirectOpenLive.js
+++ b/frontend/src/api/chat/ChatClientDirectOpenLive.js
@@ -51,10 +51,18 @@ export default class ChatClientDirectOpenLive extends ChatClientOfficialBase {
         app_id: 0
       })).data
       if (res.code !== 0) {
-        throw Error(`code=${res.code}, message=${res.message}, request_id=${res.request_id}`)
+        let msg = `code=${res.code}, message=${res.message}, request_id=${res.request_id}`
+        if (res.code === 7007) {
+          // 身份码错误
+          throw new chat.ChatClientFatalError(chat.FATAL_ERROR_TYPE_AUTH_CODE_ERROR, msg)
+        }
+        throw Error(msg)
       }
     } catch (e) {
       console.error('startGame failed:', e)
+      if (e instanceof chat.ChatClientFatalError) {
+        throw e
+      }
       return false
     }
 
diff --git a/frontend/src/api/chat/ChatClientOfficialBase/index.js b/frontend/src/api/chat/ChatClientOfficialBase/index.js
index 6a00ed8..1905747 100644
--- a/frontend/src/api/chat/ChatClientOfficialBase/index.js
+++ b/frontend/src/api/chat/ChatClientOfficialBase/index.js
@@ -1,6 +1,8 @@
 import { BrotliDecode } from './brotli_decode'
 import { inflate } from 'pako'
 
+import * as chat from '..'
+
 const HEADER_SIZE = 16
 
 export const WS_BODY_PROTOCOL_VERSION_NORMAL = 0
@@ -50,6 +52,8 @@ export default class ChatClientOfficialBase {
     this.onDelSuperChat = null
     this.onUpdateTranslation = null
 
+    this.onFatalError = null
+
     this.needInitRoom = true
     this.websocket = null
     this.retryCount = 0
@@ -116,7 +120,18 @@ export default class ChatClientOfficialBase {
       return
     }
 
-    if (!await this.initRoom()) {
+    let res
+    try {
+      res = await this.initRoom()
+    } catch (e) {
+      res = false
+      console.error('initRoom exception:', e)
+      if (e instanceof chat.ChatClientFatalError && this.onFatalError) {
+        this.onFatalError(e)
+      }
+    }
+
+    if (!res) {
       this.onWsClose()
       throw Error('initRoom failed')
     }
diff --git a/frontend/src/api/chat/ChatClientRelay.js b/frontend/src/api/chat/ChatClientRelay.js
index a570204..22c0927 100644
--- a/frontend/src/api/chat/ChatClientRelay.js
+++ b/frontend/src/api/chat/ChatClientRelay.js
@@ -1,3 +1,5 @@
+import * as chat from '.'
+
 const COMMAND_HEARTBEAT = 0
 const COMMAND_JOIN_ROOM = 1
 const COMMAND_ADD_TEXT = 2
@@ -6,6 +8,7 @@ const COMMAND_ADD_MEMBER = 4
 const COMMAND_ADD_SUPER_CHAT = 5
 const COMMAND_DEL_SUPER_CHAT = 6
 const COMMAND_UPDATE_TRANSLATION = 7
+const COMMAND_FATAL_ERROR = 8
 
 // const CONTENT_TYPE_TEXT = 0
 const CONTENT_TYPE_EMOTICON = 1
@@ -24,6 +27,8 @@ export default class ChatClientRelay {
     this.onDelSuperChat = null
     this.onUpdateTranslation = null
 
+    this.onFatalError = null
+
     this.websocket = null
     this.retryCount = 0
     this.isDestroying = false
@@ -176,6 +181,14 @@ export default class ChatClientRelay {
       this.onUpdateTranslation(data)
       break
     }
+    case COMMAND_FATAL_ERROR: {
+      if (!this.onFatalError) {
+        break
+      }
+      let error = new chat.ChatClientFatalError(data.type, data.msg)
+      this.onFatalError(error)
+      break
+    }
     }
   }
 }
diff --git a/frontend/src/api/chat/ChatClientTest.js b/frontend/src/api/chat/ChatClientTest.js
index 057d4a7..d98730c 100644
--- a/frontend/src/api/chat/ChatClientTest.js
+++ b/frontend/src/api/chat/ChatClientTest.js
@@ -238,6 +238,8 @@ export default class ChatClientTest {
     this.onDelSuperChat = null
     this.onUpdateTranslation = null
 
+    this.onFatalError = null
+
     this.timerId = null
   }
 
diff --git a/frontend/src/api/chat/index.js b/frontend/src/api/chat/index.js
index 628d4a0..b26d864 100644
--- a/frontend/src/api/chat/index.js
+++ b/frontend/src/api/chat/index.js
@@ -1,5 +1,14 @@
 import axios from 'axios'
 
+export const FATAL_ERROR_TYPE_AUTH_CODE_ERROR = 1
+
+export class ChatClientFatalError extends Error {
+  constructor(type, message) {
+    super(message)
+    this.type = type
+  }
+}
+
 export const DEFAULT_AVATAR_URL = '//static.hdslb.com/images/member/noface.gif'
 
 export function processAvatarUrl(avatarUrl) {
diff --git a/frontend/src/views/Room.vue b/frontend/src/views/Room.vue
index f9f649c..fbf576b 100644
--- a/frontend/src/views/Room.vue
+++ b/frontend/src/views/Room.vue
@@ -88,7 +88,7 @@ export default {
     // 提示用户已加载
     this.$message({
       message: 'Loaded',
-      duration: '500'
+      duration: 500
     })
   },
   beforeDestroy() {
@@ -165,6 +165,7 @@ export default {
       this.chatClient.onAddSuperChat = this.onAddSuperChat
       this.chatClient.onDelSuperChat = this.onDelSuperChat
       this.chatClient.onUpdateTranslation = this.onUpdateTranslation
+      this.chatClient.onFatalError = this.onFatalError
       this.chatClient.start()
     },
     async initTextEmoticons() {
@@ -266,6 +267,18 @@ export default {
       }
       this.$refs.renderer.updateMessage(data.id, { translation: data.translation })
     },
+    onFatalError(error) {
+      this.$message.error({
+        message: error.toString(),
+        duration: 10 * 1000
+      })
+      this.chatClient.stop()
+
+      if (error.type === chat.FATAL_ERROR_TYPE_AUTH_CODE_ERROR) {
+        // Read The Fucking Manual
+        this.$router.push({ name: 'help' })
+      }
+    },
 
     filterTextMessage(data) {
       if (this.config.blockGiftDanmaku && data.isGiftDanmaku) {
diff --git a/services/chat.py b/services/chat.py
index 77625ab..855602e 100644
--- a/services/chat.py
+++ b/services/chat.py
@@ -176,8 +176,20 @@ class OpenLiveClient(blivedm.OpenLiveClient):
         except api_open_live.TransportError:
             logger.error('_start_game() failed')
             return False
-        except api_open_live.BusinessError:
+        except api_open_live.BusinessError as e:
             logger.warning('_start_game() failed')
+
+            if e.code == 7007:
+                # 身份码错误
+                # 让我看看是哪个混蛋把房间ID、UID当做身份码
+                logger.warning('Auth code error! auth_code=%s', self._room_owner_auth_code)
+                room = client_room_manager.get_room(self.room_key)
+                if room is not None:
+                    room.send_cmd_data(api.chat.Command.FATAL_ERROR, {
+                        'type': api.chat.FatalErrorType.AUTH_CODE_ERROR,
+                        'msg': str(e)
+                    })
+
             return False
         return self._parse_start_game(data['data'])