diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
index f17ea13f4..a42cc7a4e 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
@@ -751,6 +751,11 @@ namespace SqlSugar
             var splitTableAttribute = typeof(T).GetCustomAttribute<SplitTableAttribute>();
             if (splitTableAttribute != null)
             {
+                if (splitTableAttribute.CustomSplitTableService==null
+                    &&this.Context?.CurrentConnectionConfig?.ConfigureExternalServices?.SplitTableService!=null) 
+                {
+                    this.Context.CurrentConnectionConfig.ConfigureExternalServices.SplitTableService = null;
+                }
                 return SplitTable((splitTableAttribute as SplitTableAttribute).SplitType);
             }
             else 
diff --git a/Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec b/Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec
index 87c5b843c..6097b2504 100644
--- a/Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec
+++ b/Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec
@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>SqlSugarCore</id>
-    <version>5.1.4.144-preview12</version>
+    <version>5.1.4.144-preview16</version>
     <authors>sunkaixuan</authors>
     <owners>果糖大数据科技</owners>
     <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>