diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavTask.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavTask.cs
index 1a97e5043..1310bf779 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavTask.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateNavTask.cs
@@ -66,8 +66,9 @@ namespace SqlSugar
             result.Context = UpdateNavProvider._Context;
             var entityInfo = result.Context.EntityMaintenance.GetEntityInfo<T>();
             Type properyItemType;
-            Expression exp =UtilMethods.GetIncludeExpression(navMemberName, entityInfo, out properyItemType); 
-            var method = this.GetType().GetMyMethod("Include", 2)
+            bool isList;
+            Expression exp =UtilMethods.GetIncludeExpression(navMemberName, entityInfo, out properyItemType,out isList); 
+            var method = this.GetType().GetMyMethod("Include", 2,isList)
                             .MakeGenericMethod(properyItemType);
             var obj = method.Invoke(this, new object[] { exp, updateNavOptions });
             result.MethodInfos = obj;
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/UpdateProvider/UpdateNavMethodInfo.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/UpdateProvider/UpdateNavMethodInfo.cs
index 096a6dbce..15f4b9e8f 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/UpdateProvider/UpdateNavMethodInfo.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/UpdateProvider/UpdateNavMethodInfo.cs
@@ -15,24 +15,26 @@ namespace SqlSugar
         public UpdateNavMethodInfo IncludeByNameString(string navMemberName, UpdateNavOptions updateNavOptions = null)
         {
             var type = MethodInfos.GetType().GetGenericArguments()[0];
-            var entityInfo = this.Context.EntityMaintenance.GetEntityInfo(type); 
+            var entityInfo = this.Context.EntityMaintenance.GetEntityInfo(type);
             Type properyItemType;
-            Expression exp = UtilMethods.GetIncludeExpression(navMemberName, entityInfo, out properyItemType);
-            var method = this.GetType().GetMyMethod("Include", 2)
+            bool isList;
+            Expression exp = UtilMethods.GetIncludeExpression(navMemberName, entityInfo, out properyItemType, out isList);
+            var method = this.MethodInfos.GetType().GetMyMethod("Include", 2, isList)
                             .MakeGenericMethod(properyItemType);
-            var obj = method.Invoke(this, new object[] { exp, updateNavOptions });
+            var obj = method.Invoke(this.MethodInfos, new object[] { exp, updateNavOptions });
             this.MethodInfos = obj; 
             return this;
         }
-        public UpdateNavMethodInfo ThenIncludeByNameString(string IncludeByNameString, UpdateNavOptions updateNavOptions = null)
+        public UpdateNavMethodInfo ThenIncludeByNameString(string navMemberName, UpdateNavOptions updateNavOptions = null)
         {
             var type = MethodInfos.GetType().GetGenericArguments()[0];
             var entityInfo = this.Context.EntityMaintenance.GetEntityInfo(type);
             Type properyItemType;
-            Expression exp = UtilMethods.GetIncludeExpression(navMemberName, entityInfo, out properyItemType);
-            var method = this.GetType().GetMyMethod("ThenInclude", 2)
+            bool isList;
+            Expression exp = UtilMethods.GetIncludeExpression(navMemberName, entityInfo, out properyItemType, out isList);
+            var method = this.MethodInfos.GetType().GetMyMethod("ThenInclude", 2, isList)
                             .MakeGenericMethod(properyItemType);
-            var obj = method.Invoke(this, new object[] { exp, updateNavOptions });
+            var obj = method.Invoke(this.MethodInfos, new object[] { exp, updateNavOptions });
             this.MethodInfos = obj;
             return this;
         }
diff --git a/Src/Asp.NetCore2/SqlSugar/Utilities/CommonExtensions.cs b/Src/Asp.NetCore2/SqlSugar/Utilities/CommonExtensions.cs
index ee7606cd8..3a855fb28 100644
--- a/Src/Asp.NetCore2/SqlSugar/Utilities/CommonExtensions.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Utilities/CommonExtensions.cs
@@ -32,6 +32,14 @@ namespace SqlSugar
             it.GetParameters().Length == argCount&&
             it.GetParameters().First().ParameterType==parameterType);
         }
+        public static MethodInfo GetMyMethod(this Type type, string name, int argCount, bool isList)
+        {
+            var methods= type.GetMethods().Where(it => it.Name == name).Where(it =>
+            it.GetParameters().Length == argCount&&
+            it.GetParameters()[0].ToString().Contains("List`") == isList).ToList(); 
+            return methods.First();
+        }
+
         public static MethodInfo GetMyMethod(this Type type, string name, int argCount, Type parameterType,Type parameterType2)
         {
             return type.GetMethods().Where(it=>it.Name == name).FirstOrDefault(it =>
diff --git a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
index bcfe06427..bf37a70eb 100644
--- a/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs
@@ -18,7 +18,7 @@ namespace SqlSugar
 {
     public class UtilMethods
     {
-        internal static Expression GetIncludeExpression(string navMemberName, EntityInfo entityInfo, out Type properyItemType)
+        internal static Expression GetIncludeExpression(string navMemberName, EntityInfo entityInfo, out Type properyItemType,out bool isList)
         {
             var navInfo = entityInfo.Columns.Where(it => it.Navigat != null && it.PropertyName.EqualCase(navMemberName)).FirstOrDefault();
             var properyType = navInfo.PropertyInfo.PropertyType;
@@ -26,6 +26,11 @@ namespace SqlSugar
             if (properyType.FullName.IsCollectionsList())
             {
                 properyItemType = properyType.GetGenericArguments()[0];
+                isList = true;
+            }
+            else 
+            {
+                isList = false;
             }
            return ExpressionBuilderHelper.CreateExpressionSelectField(entityInfo.Type, navInfo.PropertyName, properyType);
         }