diff --git a/lib/service/local.py b/lib/service/local.py
index 00b01ea..4a5a302 100644
--- a/lib/service/local.py
+++ b/lib/service/local.py
@@ -8,3 +8,8 @@ def check_local(txt):
     if len(result) > 0:
         risk = 1
     return {'errcode': 0, 'risk': risk, 'reason': result}
+
+
+def replace_local(txt: str):
+    t = TextFilter()
+    return t.filter(txt)
diff --git a/main.py b/main.py
index 564e423..859ddd7 100644
--- a/main.py
+++ b/main.py
@@ -1,11 +1,11 @@
 # encoding:utf-8
 
-from fastapi import FastAPI
+from fastapi import FastAPI, BackgroundTasks
 from pydantic import BaseModel
 import uvicorn
 
 from lib.service.baidu import check_baidu
-from lib.service.local import check_local
+from lib.service.local import check_local, replace_local
 from lib.service.wechat import msg_sec_check
 
 app = FastAPI()
@@ -15,6 +15,10 @@ class Item(BaseModel):
     content: str
 
 
+def begin_audit_task(task_id: str):
+    print('begin audit task: %s' % (task_id))
+
+
 @app.post("/check_wx")
 async def check_with_wx(item: Item):
     res_wechat = await msg_sec_check(item.content)
@@ -33,6 +37,19 @@ async def check_with_local(item: Item):
     return res_local
 
 
+@app.post("/replace_local")
+async def replace_with_local(item: Item):
+    res_local = replace_local(item.content)
+    return res_local
+
+
+# @app.post("/begin_task")
+# async def begin_task(item: Item, background_tasks: BackgroundTasks):
+#     res_local = check_local(item.content)
+#     background_tasks.add_task(begin_audit_task, item.content)
+#     return res_local
+
+
 @app.post("/check_all")
 async def check_content(item: Item):
     res_wechat = await msg_sec_check(item.content)