diff --git a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbPlussShopStaffServiceImpl.java b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbPlussShopStaffServiceImpl.java
index 9859983d..1691e564 100644
--- a/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbPlussShopStaffServiceImpl.java
+++ b/eladmin-system/src/main/java/cn/ysk/cashier/service/impl/shopimpl/TbPlussShopStaffServiceImpl.java
@@ -40,6 +40,7 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.util.CollectionUtils;
 
+import java.math.BigDecimal;
 import java.time.Instant;
 import java.util.*;
 import java.io.IOException;
@@ -111,6 +112,10 @@ public class TbPlussShopStaffServiceImpl implements TbPlussShopStaffService {
             throw new BadRequestException("请选择角色");
         }
 
+        if (resources.getMaxDiscountAmount().compareTo(new BigDecimal(100000000L)) > 0) {
+            throw new BadRequestException("最大优惠金额过大");
+        }
+
         resources.setCreatedAt(Instant.now().toEpochMilli());
 
         //添加收银系统后台账号