diff --git a/XCode/DataAccessLayer/MetaData/DbMetaData_Negative.cs b/XCode/DataAccessLayer/MetaData/DbMetaData_Negative.cs
index 54fe28882..b32df88b5 100644
--- a/XCode/DataAccessLayer/MetaData/DbMetaData_Negative.cs
+++ b/XCode/DataAccessLayer/MetaData/DbMetaData_Negative.cs
@@ -201,13 +201,13 @@ protected virtual void CheckTable(IDataTable entitytable, IDataTable? dbtable, M
     protected virtual String CheckColumnsChange(IDataTable entitytable, IDataTable dbtable, Boolean @readonly, Boolean onlyCreate)
     {
         var sb = new StringBuilder();
-        var etdic = entitytable.Columns.ToDictionary(e => e.ColumnName.ToLower(), e => e, StringComparer.OrdinalIgnoreCase);
+        var etdic = entitytable.Columns.ToDictionary(e => this.FormatName(e), e => e, StringComparer.OrdinalIgnoreCase);
         var dbdic = dbtable.Columns.ToDictionary(e => e.ColumnName.ToLower(), e => e, StringComparer.OrdinalIgnoreCase);
 
         #region 新增列
         foreach (var item in entitytable.Columns)
         {
-            if (!dbdic.ContainsKey(item.ColumnName.ToLower()))
+            if (!dbdic.ContainsKey(this.FormatName(item)))
             {
                 // 非空字段需要重建表
                 if (!item.Nullable)
@@ -237,7 +237,7 @@ protected virtual String CheckColumnsChange(IDataTable entitytable, IDataTable d
         for (var i = dbtable.Columns.Count - 1; i >= 0; i--)
         {
             var item = dbtable.Columns[i];
-            if (!etdic.ContainsKey(item.ColumnName.ToLower()))
+            if (!etdic.ContainsKey(item.ColumnName))
             {
                 if (!String.IsNullOrEmpty(item.Description)) PerformSchema(sb, @readonly || onlyCreate, DDLSchema.DropColumnDescription, item);
                 PerformSchema(sbDelete, @readonly || onlyCreate, DDLSchema.DropColumn, item);
@@ -265,7 +265,7 @@ protected virtual String CheckColumnsChange(IDataTable entitytable, IDataTable d
 
         foreach (var item in entitytable.Columns)
         {
-            if (!dbdic.TryGetValue(item.ColumnName, out var dbf)) continue;
+            if (!dbdic.TryGetValue(this.FormatName(item), out var dbf)) continue;
 
             // 对于修改列，只读或者只创建，都只要sql
             if (IsColumnTypeChanged(item, dbf))