diff --git a/kiri-engine/Abstracts/BaseApplication.php b/kiri-engine/Abstracts/BaseApplication.php
index 7422bb87..da880eaa 100644
--- a/kiri-engine/Abstracts/BaseApplication.php
+++ b/kiri-engine/Abstracts/BaseApplication.php
@@ -91,7 +91,6 @@ abstract class BaseApplication extends Component
     public function mapping(ConfigProvider $config): void
     {
         $this->container->bind(LoggerInterface::class, new StdoutLogger());
-        $this->container->set(PoolInterface::class, Pool::class);
         foreach ($config->get('mapping', []) as $interface => $class) {
             $this->container->set($interface, $class);
         }