diff --git a/dev.php b/dev.php
index 349868a..a37c5a6 100644
--- a/dev.php
+++ b/dev.php
@@ -8,7 +8,7 @@
         'SOCK_TYPE' => SWOOLE_TCP,
         'RUN_MODEL' => SWOOLE_PROCESS,
         'SETTING' => [
-            'worker_num' => 8,
+            'worker_num' => swoole_cpu_num(),
             'reload_async' => true,
             'max_wait_time'=>3,
             'document_root'            => EASYSWOOLE_ROOT . '/Static',