diff --git a/python/paddle/fluid/__init__.py b/python/paddle/fluid/__init__.py
index bcd4e4f6073eff1ea0449da8096030743158dd0f..737c8be8147a7efaf9b89827f063430146d3c078 100644
--- a/python/paddle/fluid/__init__.py
+++ b/python/paddle/fluid/__init__.py
@@ -121,6 +121,9 @@ def __bootstrap__():
         read_env_flags.append('rpc_server_profile_period')
         read_env_flags.append('rpc_server_profile_path')
         read_env_flags.append('enable_rpc_profiler')
+        read_env_flags.append('rpc_send_thread_num')
+        read_env_flags.append('rpc_get_thread_num')
+        read_env_flags.append('rpc_prefetch_thread_num')
 
     if core.is_compiled_with_cuda():
         read_env_flags += [