diff --git a/src/main/java/com/example/ysu/service/CartServiceImpl.java b/src/main/java/com/example/ysu/service/CartServiceImpl.java
index 48bbbb4..7c7e520 100644
--- a/src/main/java/com/example/ysu/service/CartServiceImpl.java
+++ b/src/main/java/com/example/ysu/service/CartServiceImpl.java
@@ -30,5 +30,4 @@ public void CartUpdate(List<cartDTO> cartList) {
             cartMapper.CartUpdate(quantity, menuId);
         }
     }
-
 }
diff --git a/src/main/resources/mybatis/mapper/CartMapper.xml b/src/main/resources/mybatis/mapper/CartMapper.xml
index bc31e41..4576ecf 100644
--- a/src/main/resources/mybatis/mapper/CartMapper.xml
+++ b/src/main/resources/mybatis/mapper/CartMapper.xml
@@ -17,12 +17,10 @@
         WHERE menu_id = #{menu_id};
     </delete>
 
-    <update id="CartUpdate" parameterType="java.util.List">
-        <foreach item="item" index="index" collection="list" separator=",">
+    <update id="CartUpdate" parameterType="map">
             UPDATE cart
             SET quantity = #{quantity}
             WHERE menu_id = #{menu_id}
-            AND u_id = "2023200009;
-        </foreach>
+            AND u_id = '2023200009';
     </update>
 </mapper>
\ No newline at end of file