diff --git a/tools/pay_backend.py b/tools/pay_backend.py
index e69de29..9250502 100644
--- a/tools/pay_backend.py
+++ b/tools/pay_backend.py
@@ -0,0 +1,79 @@
+# -*- coding: utf-8 -*-
+
+import os
+import json
+import time
+import datetime
+import hashlib
+import urllib.request
+import tornado.ioloop
+import tornado.web
+
+def md5Sign(params, secret, timestamp, connstr = '&', secret_connstr = ':'):
+    params_str = ''
+    for key in sorted(params.keys()):
+        params_str = params_str + key + '=' + str(params[key]) + connstr
+    if params_str != '' and connstr != '':
+        params_str = params_str[0:-1]
+    str1 = params_str + secret_connstr + str(timestamp) + secret
+    try:
+        m5 = hashlib.md5()
+        m5.update(str1.encode('utf-8'))
+        return m5.hexdigest()
+    except Exception as e:
+        print('md5Sign error: ' + str(e), flush=True)
+
+def getDaySeconds(time_val, incdays):
+    time_zone = 8
+    dayseconds = int((time_val + time_zone * 3600)/3600/24 + incdays) * 3600 * 24 - 3600 * time_zone;
+    print(dayseconds, flush=True)
+    return dayseconds
+
+def sendNotify(conf, sendtime):
+    try:
+        print(datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%s"), flush=True)
+        print('sendNotify start', flush=True)
+        params = {'key' : 'kingsome'}
+        secret = 'fc38349c5d084e920925e614c420be9f'
+        timestamp = time.time()
+        md5signstr = md5Sign(params, secret, timestamp)
+        url = conf['notify_url'] + '&timestamp=' + str(timestamp) + '&sign=' + md5signstr
+        req = urllib.request.Request(url)
+        data = urllib.request.urlopen(req).read()
+        print('sendNotify end', flush=True)
+    except Exception as e:
+        print('sendNotifu error: ' + str(e), flush=True)
+
+    #进入下一次循环
+    tornado.ioloop.IOLoop.current().call_at(getDaySeconds(time.time(), 1)  + sendtime,
+                                            lambda : sendNotify(conf, sendtime))
+
+class SelfCheckingHandler(tornado.web.RequestHandler):
+
+    def get(self):
+        self.write(json.dumps({
+            'errcode': 0,
+            'errmsg': '',
+            'healthy': 1,
+            'max_rundelay': 10
+        },
+        separators=(',', ':')))
+
+def make_app():
+    return tornado.web.Application([
+        (r"/webapp/index[\.]php", SelfCheckingHandler),
+    ])
+
+if __name__ == "__main__":
+    print('start!', flush=True)
+    conf = json.loads(open('../config/pay_backend.json', 'r').read())
+    app = make_app()
+    app.listen(conf['listen_port'])
+
+    tornado.ioloop.IOLoop.current().call_at(getDaySeconds(time.time(), 1)  + conf['sendtime1'],
+                                            lambda : sendNotify(conf, conf['sendtime1']))
+    tornado.ioloop.IOLoop.current().call_at(getDaySeconds(time.time(), 1)  + conf['sendtime2'],
+                                            lambda : sendNotify(conf, conf['sendtime2']))
+    tornado.ioloop.IOLoop.current().call_at(getDaySeconds(time.time(), 1)  + conf['sendtime3'],
+                                            lambda : sendNotify(conf, conf['sendtime3']))
+    tornado.ioloop.IOLoop.current().start()