diff --git a/vnpy/api/rest/rest_client.py b/vnpy/api/rest/rest_client.py
index d8422720..96d2b163 100644
--- a/vnpy/api/rest/rest_client.py
+++ b/vnpy/api/rest/rest_client.py
@@ -7,7 +7,10 @@ import traceback
 import uuid
 from datetime import datetime
 from enum import Enum
+import platform
 from multiprocessing.dummy import Pool
+from concurrent.futures import ThreadPoolExecutor
+
 from threading import Lock, Thread
 from types import TracebackType
 from typing import Any, Callable, List, Optional, Type, Union
@@ -138,8 +141,16 @@ class RestClient(object):
 
         self.proxies = None
 
+        self.thread_executor = ThreadPoolExecutor(max_workers=os.cpu_count() * 20)
+
         self._tasks_lock = Lock()
-        self._tasks: List[multiprocessing.pool.AsyncResult] = []
+
+        #self._tasks: List[multiprocessing.pool.AsyncResult] = []
+        self._tasks = []
+
+        self._executor_lock = Lock()
+        self._executors = []
+
         self._sessions_lock = Lock()
         self._sessions: List[requests.Session] = []
 
@@ -275,20 +286,32 @@ class RestClient(object):
             extra=extra,
             client=self,
         )
-        task = pool.apply_async(
-            self._process_request,
-            args=[request, ],
-            callback=self._clean_finished_tasks,
-            # error_callback=lambda e: self.on_error(type(e), e, e.__traceback__, request),
-        )
-        self._push_task(task)
+        if str(platform.system()) == 'Windows':
+            task = pool.apply_async(
+                self._process_request,
+                args=[request, ],
+                callback=self._clean_finished_tasks,
+                # error_callback=lambda e: self.on_error(type(e), e, e.__traceback__, request),
+            )
+            self._push_task(task)
+        else:
+            self._clean_finished_executors()
+            executor = self.thread_executor.submit(self._process_request, request)
+            with self._executor_lock:
+                self._executors.append(executor)
+
         return request
 
     def _push_task(self, task):
         with self._tasks_lock:
             self._tasks.append(task)
 
-    def _clean_finished_tasks(self, result: None):
+    def _clean_finished_executors(self,):
+        with self._executor_lock:
+            not_finished_executors = [i for i in self._executors if not i.done()]
+            self._executors = not_finished_executors
+
+    def _clean_finished_tasks(self, result = None):
         with self._tasks_lock:
             not_finished_tasks = [i for i in self._tasks if not i.ready()]
             self._tasks = not_finished_tasks