diff --git a/src/Components/connection-center/src/ConnectionCenter.php b/src/Components/connection-center/src/ConnectionCenter.php
index 10b51b1004..d44a39ce72 100644
--- a/src/Components/connection-center/src/ConnectionCenter.php
+++ b/src/Components/connection-center/src/ConnectionCenter.php
@@ -98,7 +98,7 @@ public function getRequestContextConnection(string $name): IConnection
                 }
             }
         }
-        if (null === $connection)
+        if (null === $connection || ConnectionStatus::Available !== $connection->getStatus())
         {
             $connection = $this->getConnection($name);
             $requestContext[static::class][$name] = [
diff --git a/src/Components/connection-center/src/Contract/IConnection.php b/src/Components/connection-center/src/Contract/IConnection.php
index 775e86d699..3b63fcee6c 100644
--- a/src/Components/connection-center/src/Contract/IConnection.php
+++ b/src/Components/connection-center/src/Contract/IConnection.php
@@ -9,8 +9,14 @@
  */
 use Imi\ConnectionCenter\Enum\ConnectionStatus;
 
+/**
+ * @template T of object
+ */
 interface IConnection
 {
+    /**
+     * @param T $instance
+     */
     public function __construct(IConnectionManager $manager, object $instance);
 
     /**
@@ -20,6 +26,8 @@ public function getManager(): IConnectionManager;
 
     /**
      * 获取连接资源管理的对象实例.
+     *
+     * @return T
      */
     public function getInstance(): object;