diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index 397826948..5bb155719 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -379,16 +379,18 @@ namespace SqlSugar
             this.ClearFilter(typeof(FilterType1), typeof(FilterType2),typeof(FilterType3));
             return this;
         }
-        public ISugarQueryable<T> Filter(Type type) 
+        public ISugarQueryable<T> Filter(Type type)
         {
             this.Context.InitMappingInfo(type);
             var whereString= QueryBuilder.GetFilters(type);
-            if (whereString.HasValue()) 
+            if (whereString.HasValue())
             {
                 this.Where(whereString);
             }
+            UtilMethods.AddDiscrimator(type,this);
             return this;
         }
+
         public virtual ISugarQueryable<T> Mapper(Action<T> mapperAction)
         {
             this.MapperAction=UtilMethods.IsNullReturnNew(this.MapperAction);
diff --git a/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
index 668f0647a..44fcd214b 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
@@ -127,6 +127,7 @@ namespace SqlSugar
 
             InitMappingInfo<T>();
             var result = this.CreateQueryable<T>();
+            UtilMethods.AddDiscrimator(typeof(T), result);
             return result;
         }
         /// <summary>
diff --git a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
index 03e702399..fb7320fab 100644
--- a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
@@ -1265,5 +1265,23 @@ namespace SqlSugar
             var method = value.GetType().GetMethods().First(it => it.GetParameters().Length == 0 && it.Name == "ToShortDateString");
             return method.Invoke(value, new object[] { });
         }
+
+
+        internal static void AddDiscrimator<T>(Type type, ISugarQueryable<T> queryable)
+        {
+            var entityInfo = queryable.Context?.EntityMaintenance?.GetEntityInfoWithAttr(type);
+            if (entityInfo!=null&&entityInfo.Discrimator.HasValue())
+            {
+                Check.ExceptionEasy(!Regex.IsMatch(entityInfo.Discrimator, @"^(?:\w+:\w+)(?:,\w+:\w+)*$"), "The format should be type:cat for this type, and if there are multiple, it can be FieldName:cat,FieldName2:dog ", "格式错误应该是type:cat这种格式，如果是多个可以FieldName:cat,FieldName2:dog，不要有空格");
+                var array = entityInfo.Discrimator.Split(',');
+                foreach (var disItem in array)
+                {
+                    var name = disItem.Split(':').First();
+                    var value = disItem.Split(':').Last();
+                    queryable.Where(name, "=", value);
+                }
+            }
+        }
+
     }
 }