diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/service/OrderService.java b/src/main/java/com/chaozhanggui/system/cashierservice/service/OrderService.java
index 830dccb..e3ed197 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/service/OrderService.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/service/OrderService.java
@@ -662,7 +662,7 @@ public class OrderService {
                                             .or()
                                             .eq(TbCashierCart::getMasterId, "")
                                             .or()
-                                            .eq(TbCashierCart::getMasterId, "");
+                                            .isNull(TbCashierCart::getMasterId);
                                 }));
                     });