diff --git a/src/main/java/com/sqx/modules/artificer/service/impl/OrdersServiceImpl.java b/src/main/java/com/sqx/modules/artificer/service/impl/OrdersServiceImpl.java
index 5b7658e..e416e81 100644
--- a/src/main/java/com/sqx/modules/artificer/service/impl/OrdersServiceImpl.java
+++ b/src/main/java/com/sqx/modules/artificer/service/impl/OrdersServiceImpl.java
@@ -1959,6 +1959,9 @@ public class OrdersServiceImpl extends ServiceImpl<OrdersDao, Orders> implements
                 BigDecimal pccxchajia = usualTravelMoney.subtract(oldUsualTravelMoney);
                 BigDecimal yjcxchajia = nightTravelMoney.subtract(oldNightTravelMoney);
                 BigDecimal cxchajia = pccxchajia.subtract(yjcxchajia);
+                if(cxchajia.compareTo(BigDecimal.ZERO)<0){
+                    cxchajia = BigDecimal.ZERO;
+                }
                 //总差价
                 BigDecimal chajia = xmchajia.add(cxchajia);