diff --git a/library/think/db/connector/Sqlsrv.php b/library/think/db/connector/Sqlsrv.php
index adefbb35c3..aba405fd95 100644
--- a/library/think/db/connector/Sqlsrv.php
+++ b/library/think/db/connector/Sqlsrv.php
@@ -13,6 +13,7 @@
 
 use PDO;
 use think\db\Connection;
+use think\db\Query;
 
 /**
  * Sqlsrv数据库驱动