diff --git a/OrmTest/UnitTest/Mapping .cs b/OrmTest/UnitTest/Mapping .cs
index 37e236314..b37a4d1d1 100644
--- a/OrmTest/UnitTest/Mapping .cs	
+++ b/OrmTest/UnitTest/Mapping .cs	
@@ -19,7 +19,10 @@ namespace OrmTest.UnitTest
         public void Init() {
 
             var db = GetInstance();
+            db.IgnoreColumns.Add("1", "1");
             var s1= db.Queryable<Student>().Where(it=>it.Id==1).ToSql();
+
+            var x2 = GetInstance();
         }
 
         public SqlSugarClient GetInstance()
diff --git a/SqlSugar/Abstract/DbProvider/EntityProvider/EntityProvider.cs b/SqlSugar/Abstract/DbProvider/EntityProvider/EntityProvider.cs
index 620ce3be4..d923560e3 100644
--- a/SqlSugar/Abstract/DbProvider/EntityProvider/EntityProvider.cs
+++ b/SqlSugar/Abstract/DbProvider/EntityProvider/EntityProvider.cs
@@ -111,7 +111,6 @@ namespace SqlSugar
                 var sugarColumn = property.GetCustomAttributes(typeof(SugarColumn), true)
                 .Where(it => it is SugarColumn)
                 .Select(it => (SugarColumn)it)
-                .Where(it => it.ColumnName.IsValuable())
                 .FirstOrDefault();
                 column.DbTableName = result.DbTableName;
                 column.EnitytName = result.EntityName;