diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/Entities/AppendNavInfoList.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/Entities/AppendNavInfoList.cs
index f190ff324..545b91e5c 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/Entities/AppendNavInfoList.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/Entities/AppendNavInfoList.cs
@@ -19,5 +19,6 @@ namespace SqlSugar
     {
         public List<Expression> ExpressionList { get;  set; }
         public string Name { get;  set; }
+        public string ParentName { get;  set; }
     }
 }
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
index 4175d88aa..158ae2b9b 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs
@@ -13,6 +13,7 @@ using System.Collections.ObjectModel;
 using NetTaste;
 using Newtonsoft.Json.Linq;
 using System.Xml.Linq;
+using System.Runtime.CompilerServices;
 
 
 namespace SqlSugar
@@ -597,7 +598,7 @@ namespace SqlSugar
             AddMappingNavProperties(dic, navInfo, entityColumns);
         }
 
-        private static void AddMappingNavProperties(Dictionary<string, Expression> dic, AppendNavInfo navInfo, List<EntityColumnInfo> entityColumns)
+        private  void AddMappingNavProperties(Dictionary<string, Expression> dic, AppendNavInfo navInfo, List<EntityColumnInfo> entityColumns)
         {
             foreach (var item in dic)
             {
@@ -617,6 +618,22 @@ namespace SqlSugar
                         };
                         navInfo.MappingNavProperties.Add(item.Key, mappingNavColumnInfo);
                     }
+                    else if (ExpressionTool.IsNavMember(this.Context,value)) 
+                    {
+                        var mappingNavColumnInfo = new MappingNavColumnInfo()
+                        {
+                            ExpressionList = expressionTree,
+                            Name = name
+                        };
+                        if (value is MemberExpression exp) 
+                        {
+                            if (exp.Expression is MemberExpression expChild) 
+                            { 
+                                mappingNavColumnInfo.ParentName = expChild.Member.Name;
+                            }
+                        }
+                        navInfo.MappingNavProperties.Add(item.Key, mappingNavColumnInfo);
+                    }
                 }
 
             }
@@ -746,8 +763,17 @@ namespace SqlSugar
                 {
                     var rightName = item.Value.Name;
                     var rightColumnInfo = columnInfos.FirstOrDefault(a => a.PropertyName == rightName);
+                    var anyParent = item.Value.ParentName.HasValue();
+                    if (anyParent) 
+                    {
+                        rightColumnInfo = columnInfos.FirstOrDefault(a => a.PropertyName == item.Value.ParentName); 
+                    }
                     var rightValue=rightColumnInfo.PropertyInfo.GetValue(rightObject);
                     var leftName = item.Key;
+                    if (anyParent) 
+                    {
+                        rightValue = rightValue.GetType().GetProperty(item.Value.Name).GetValue(rightValue);
+                    }
                     ////  var rightColumn=col
                     //  object value = item;
                     if (item.Value.ExpressionList.Count > 1 && rightValue != null)
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
index 2d9a555be..f23096c0a 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/Common/ExpressionTool.cs
@@ -101,6 +101,35 @@ namespace SqlSugar
             }
             return isNav;
         }
+        internal static bool IsNavMember(ISqlSugarClient context, Expression member)
+        {
+            var isNav = false;
+            if (member is MemberExpression && (member as MemberExpression)?.Type?.IsClass() == true)
+            {
+                var memberExp = (member as MemberExpression);
+                var name = memberExp?.Member?.Name;
+                var type = memberExp?.Type;
+                if (name != null && type != null && memberExp.Expression is ParameterExpression)
+                {
+                    var rootExp = (memberExp.Expression as ParameterExpression);
+                    var entityInfo = context?.EntityMaintenance?.GetEntityInfo(rootExp.Type);
+                    var navColumn = entityInfo.Columns.FirstOrDefault(it => it.PropertyName == name);
+                    isNav = navColumn?.Navigat != null;
+                }
+                else if (name != null && type != null && memberExp.Expression is MemberExpression)
+                {
+                    var rootExp = (memberExp.Expression as MemberExpression);
+                    if (rootExp.Type.IsClass()&&type.IsArray==false&&type.FullName.IsCollectionsList()==false)
+                    {
+                        var entityInfo = context?.EntityMaintenance?.GetEntityInfo(rootExp.Type);
+                        var navColumn = entityInfo.Columns.FirstOrDefault(it => it.PropertyName == name);
+                        isNav = navColumn?.Navigat != null;
+                    }
+                }
+            }
+            return isNav;
+        }
+
         internal static bool IsSqlParameterDbType(ExpressionContext context, Expression member)
         {
             var isNav = false;