diff --git a/SiNan.Business/AggregationBusiness.cs b/SiNan.Business/AggregationBusiness.cs
index 278a089..73f2cb3 100644
--- a/SiNan.Business/AggregationBusiness.cs
+++ b/SiNan.Business/AggregationBusiness.cs
@@ -98,11 +98,10 @@ namespace SiNan.Business
                                                        .ToList();
 
             var i = 0;
-            var spuGroups = from s in spuIdList
+            var spuGroups = (from s in spuIdList
                             let num = i++
                             group s by num / 10 into g
-                            select g.ToArray();  //10个spu为一组
-
+                            select g.ToArray()).ToList();  //10个spu为一组
             var spuGroupCount = spuGroups.Count();
             var spuGroupIndex = 0;