diff --git a/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl b/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl
index 4c61691..98a9c17 100644
--- a/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl
+++ b/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl
@@ -205,17 +205,14 @@ format_event(LocationCode, DynamicLocationCode, EventType, #{<<"event_code">> :=
     },
     iolist_to_binary(jiffy:encode(ReqData, [force_utf8])).
 
--spec generate_task_id(DynamicLocationCode :: binary(), EventCode :: binary()) -> binary().
-generate_task_id(DynamicLocationCode, EventCode) when is_binary(DynamicLocationCode), is_binary(EventCode) ->
-    case byte_size(DynamicLocationCode) of
-        22 ->
-            LocCode = binary_part(DynamicLocationCode, 0, 17),
+-spec generate_task_id(LocationCode :: binary(), EventCode :: binary()) -> binary().
+generate_task_id(LocationCode, EventCode) when is_binary(LocationCode), is_binary(EventCode) ->
+    case byte_size(LocationCode) > 22 of
+        true ->
+            LocCode = binary_part(LocationCode, 0, 22),
             <<LocCode/binary, "_", EventCode/binary>>;
-        28 ->
-            LocCode = binary_part(DynamicLocationCode, 0, 22),
-            <<LocCode/binary, "_", EventCode/binary>>;
-        _ ->
-            <<DynamicLocationCode/binary, "_", EventCode/binary>>
+        false ->
+            <<LocationCode/binary, "_", EventCode/binary>>
     end.
 
 -spec generate_private_key(PriFile :: string()) -> public_key:private_key().
diff --git a/docs/jinzhi.md b/docs/jinzhi.md
index b4e6bd5..9b7c930 100644
--- a/docs/jinzhi.md
+++ b/docs/jinzhi.md
@@ -1,11 +1,11 @@
 # 事件分类
 
 ```text
-23103  鼠类监测         event_code:
-20407  异物占道         event_code:
-10404  垃圾溢满         event_code:
-22503  后厨非标着装      event_code:
-23104  动火离人         event_code:
+23103  鼠类监测         event_code: 11
+20407  异物占道         event_code: 13
+10404  垃圾溢满         event_code: 14
+22503  后厨非标着装      event_code: 12
+23104  动火离人         event_code: 15
 ```
 
 1、鼠类检测 0508103010001050300001 朴苑餐厅