diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java b/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java
index d54f494..9cf5114 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/service/CartService.java
@@ -308,7 +308,7 @@ public class CartService {
                                 cashierCart.setTotalNumber(buyNum);
                                 cashierCart.setNumber(buyNum);
                                 cashierCart.setNote(note);
-                                if (tbProductSkuWithBLOBs != null && type == 0 && isVip == 0 && tbProductSkuWithBLOBs.getSuit() != null
+                                if (tbProductSkuWithBLOBs != null && type == 0 && isVip != null && isVip == 0 && tbProductSkuWithBLOBs.getSuit() != null
                                         && tbProductSkuWithBLOBs.getSuit() > 1 && cashierCart.getNumber() < tbProductSkuWithBLOBs.getSuit()) {
                                     cashierCartMapper.deleteByPrimaryKey(cashierCart.getId());
                                     continue;