diff --git a/fedlab/core/client/manager.py b/fedlab/core/client/manager.py
index f8a2cad5..cf9f0f11 100644
--- a/fedlab/core/client/manager.py
+++ b/fedlab/core/client/manager.py
@@ -114,7 +114,8 @@ def main_loop(self):
         while True:
             # request model actively
             self._LOGGER.info("request parameter procedure")
-
+            self._network.send(message_code=MessageCode.ParameterRequest, src=0)
+            
             # waits for data from
             sender_rank, message_code, payload = self._network.recv(src=0)
             # sender_rank, message_code, payload = PackageProcessor.recv_package(src=0)