diff --git a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
index 7f3835e01..bb57fa984 100644
--- a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
@@ -335,6 +335,12 @@ namespace SqlSugar
                 context.CurrentConnectionConfig.ConfigureExternalServices.SplitTableService
                     = (ISplitTableService)Activator.CreateInstance(splitTableAttribute.CustomSplitTableService);
             }
+            if (splitTableAttribute.CustomSplitTableService != null
+                && splitTableAttribute.CustomSplitTableService == null
+                && !splitTableAttribute.SplitType.IsIn(SplitType._Custom01, SplitType._Custom02, SplitType._Custom03, SplitType._Custom04, SplitType._Custom05, SplitType._Custom06)) 
+            {
+                splitTableAttribute.CustomSplitTableService = null;
+            }
         }
         public static void ConvertParameter(SugarParameter p, ISqlBuilder builder)
         {