diff --git a/v2/transmitter.py b/v2/transmitter.py
index f7b631f..2c6583e 100644
--- a/v2/transmitter.py
+++ b/v2/transmitter.py
@@ -22,8 +22,8 @@ class Ping(threading.Thread):
 
     def run(self):
         while True:
-            ts = int(time.time())
             time.sleep(10)
+            ts = int(time.time())
             if self.ping_ts + self.time_out < ts:
                 # 保持连接
                 try: