diff --git a/Docker/Dockerfile b/Docker/Dockerfile
index 8d3fe31..0d74819 100644
--- a/Docker/Dockerfile
+++ b/Docker/Dockerfile
@@ -5,7 +5,7 @@ COPY . .
 ENV DEBIAN_FRONTEND noninteractive
 ENV TZ Asia/Shanghai
 
-RUN pip install -r requirements.txt
+RUN pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple
 
 EXPOSE 35050
 EXPOSE 36050
diff --git a/Src/Manager/ProxyManager.py b/Src/Manager/ProxyManager.py
index 5a73c96..068ab11 100644
--- a/Src/Manager/ProxyManager.py
+++ b/Src/Manager/ProxyManager.py
@@ -107,6 +107,7 @@ def getQualityUsefulProxy(self, **kwargs):
         return result
 
     def deleteRawProxy(self, proxy):
+        log.info(proxy)
         self.raw_proxy.deleteRawProxy(proxy)
 
     def saveRawProxy(self, proxy):
@@ -159,6 +160,9 @@ def updateUsefulProxy(self, item, info):
         if item.get("https") == PROXY_HTTPS["UNKNOWN"]:
             data["$set"]["https"] = info["https"]
 
+        if item.get("quality"):
+            data["$set"]["quality"] = -1
+
         if len(data["$set"]) > 0:
             self.useful_proxy.updateUsefulProxy(item["proxy"], data)
 
diff --git a/Src/Web/api/api.py b/Src/Web/api/api.py
index f5bec51..91b9e52 100644
--- a/Src/Web/api/api.py
+++ b/Src/Web/api/api.py
@@ -84,11 +84,33 @@ def get(self):
         item = proxy_manager.getSampleUsefulProxy(**options)
         if item:
             del item["_id"]
-
         result["data"] = item
 
         return result
+class deleteProxy(Resource):
+    def __init__(self, **kwargs):
+        super(deleteProxy, self).__init__(**kwargs)
+
+        parser = reqparse.RequestParser()
+        parser.add_argument('proxy', type=str, location='args')
+        self.args = parser.parse_args()
 
+    def get(self):
+        result = {
+            "data": {}
+        }
+
+        options = {
+            "proxy": self.args.get('proxy'),
+            "quality":-1
+        }
+        log.info("receive params: {}".format(options))
+        info={}
+        item = proxy_manager.updateUsefulProxy(options, info)
+        log.info("delete {}".format(item))
+        result["data"] = item
+
+        return result
 
 class Proxies(Resource):
     def __init__(self, **kwargs):
@@ -140,4 +162,6 @@ def init_app(app):
     api = Api(app)
     api.add_resource(Proxies, '/api/v1/proxies/')
     api.add_resource(Proxy, '/api/v1/proxy/')
+    api.add_resource(deleteProxy, '/api/v1/proxy/delete')
+    
     api.add_resource(ApiList, '/api/v1/')
diff --git a/requirements.txt b/requirements.txt
index 8a04b6f..eedf907 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,3 +12,4 @@ pymongo==3.7.2
 flask-mongoengine==0.8.2
 Flask-Admin==1.5.3
 Flask-Security==3.0.0
+email-validator==1.1.1
\ No newline at end of file