diff --git a/CoreCms.Net.Web.WebApi/Controllers/ServiceController.cs b/CoreCms.Net.Web.WebApi/Controllers/ServiceController.cs
index 7fb6e093..c1ff2666 100644
--- a/CoreCms.Net.Web.WebApi/Controllers/ServiceController.cs
+++ b/CoreCms.Net.Web.WebApi/Controllers/ServiceController.cs
@@ -251,6 +251,23 @@ namespace CoreCms.Net.Web.WebApi.Controllers
                 return jm;
             }
 
+            //判断当前数量是否超过限制数量
+            var orderCount = await _userServicesOrderServices.GetCountAsync(p => p.status == (int)GlobalEnumVars.ServicesOrderStatus.正常 && p.servicesId == entity.id);
+
+            if (orderCount >= data.amount)
+            {
+                jm.msg = "当前项目已售罄。";
+                return jm;
+            }
+
+            //获取自己的购买数量
+            var userOrderCount = await _userServicesOrderServices.GetCountAsync(p => p.status == (int)GlobalEnumVars.ServicesOrderStatus.正常 && p.servicesId == entity.id && p.userId == _user.ID);
+            if (data.maxBuyNumber >= 0 && userOrderCount > data.maxBuyNumber)
+            {
+                jm.msg = "已超出购买数量限制。";
+                return jm;
+            }
+
             var order = new CoreCmsUserServicesOrder();
             order.serviceOrderId = CommonHelper.GetSerialNumberType((int)GlobalEnumVars.SerialNumberType.服务订单编号);
             order.userId = _user.ID;