diff --git a/Src/Asp.Net/SqlSugar/Entities/JoinMapper.cs b/Src/Asp.Net/SqlSugar/Entities/JoinMapper.cs
new file mode 100644
index 000000000..b45d7729e
--- /dev/null
+++ b/Src/Asp.Net/SqlSugar/Entities/JoinMapper.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SqlSugar 
+{
+    internal class JoinMapper
+    {
+        public string asName { get; set; }
+        public string dbName { get; set; }
+    }
+}
diff --git a/Src/Asp.Net/SqlSugar/Infrastructure/Mapper.cs b/Src/Asp.Net/SqlSugar/Infrastructure/Mapper.cs
index c8bb72b8c..0577d20d0 100644
--- a/Src/Asp.Net/SqlSugar/Infrastructure/Mapper.cs
+++ b/Src/Asp.Net/SqlSugar/Infrastructure/Mapper.cs
@@ -20,85 +20,45 @@ namespace SqlSugar
             var veiwModel = _context.EntityMaintenance.GetEntityInfo<TResult>();
             var exp = (queryBuilder.JoinExpression as LambdaExpression);
             List<KeyValuePair<string, object>> selectItems = new List<KeyValuePair<string, object>>();
-            foreach (var viewColumn in veiwModel.Columns)
+            var exParsmeters = exp.Parameters.Select(it => new { shortName = it.Name, type = it.Type }).ToList();
+            foreach (var viewColumns in veiwModel.Columns)
             {
-                var exParsmeters = exp.Parameters.Select(it => new { shortName = it.Name, type = it.Type }).ToList();
+                var isbreak = false;
                 foreach (var expPars in exParsmeters)
-                {
-                    var columns = _context.EntityMaintenance.GetEntityInfo(expPars.type).Columns.Where(it => it.IsIgnore == false);
-                    var joinModelDbColumns = columns.Select(it =>
-                    new { asName = it.PropertyName, dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-                    var joinModelProperties = columns.Select(it =>
-                    new { asName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type), dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-                    var joinModelDbColumnsWithType = columns.Select(it =>
-                    new { asName = (expPars.type.Name + it.PropertyName), dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-                    var joinModelPropertiesWithTye = columns.Select(it =>
-                    new { asName = (expPars.type.Name + _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type)), dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-                    var joinModelDbColumns_WithType = columns.Select(it =>
-                    new { asName = (expPars.type.Name +"_"+ it.PropertyName), dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-                    var joinModelProperties_WithType = columns.Select(it =>
-                    new { asName = (expPars.type.Name +"_"+ _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type)), dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-                    var joinModelDbColumnsWithSN = columns.Select(it =>
-                    new { asName = (expPars.shortName + it.PropertyName), dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-                    var joinModelPropertiesWithSN = columns.Select(it =>
-                    new { asName = (expPars.shortName + _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type)), dbName = _context.EntityMaintenance.GetDbColumnName(it.PropertyName, expPars.type) }).ToList();
-
-                    if (joinModelDbColumns.Any(it => it.asName.Equals(viewColumn.PropertyName,StringComparison.CurrentCultureIgnoreCase)))
-                    {
-                        var value = joinModelDbColumns.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName,value));
-                        break;
-                    }
-                    if (joinModelProperties.Any(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase)))
+                 {
+                    if (isbreak)
                     {
-                        var value = joinModelProperties.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName, value));
-                        break;
-                    }
-                    if (joinModelDbColumnsWithType.Any(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase)))
-                    {
-                        var value = joinModelDbColumnsWithType.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName, value));
-                        break;
-                    }
-                    if (joinModelPropertiesWithTye.Any(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase)))
-                    {
-                        var value = joinModelPropertiesWithTye.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName, value));
                         break;
                     }
+                    var entityInfo = _context.EntityMaintenance.GetEntityInfo(expPars.type);
+                    var columns = entityInfo.Columns.Where(it => it.IsIgnore == false);
+                    var list = columns.Select(it => {
+                        var array = new string[]
+                        {
+                            it.PropertyName,
+                            it.DbColumnName,
 
-                    if (joinModelDbColumns_WithType.Any(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase)))
-                    {
-                        var value = joinModelDbColumns_WithType.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName, value));
-                        break;
-                    }
-                    if (joinModelProperties_WithType.Any(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase)))
-                    {
-                        var value = joinModelProperties_WithType.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName, value));
-                        break;
-                    }
-                    if (joinModelDbColumnsWithSN.Any(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase)))
-                    {
-                        var value = joinModelDbColumnsWithSN.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName, value));
-                        break;
-                    }
-                    if (joinModelPropertiesWithSN.Any(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase)))
+                            expPars.type.Name+it.PropertyName,
+                            expPars.type.Name+it.DbColumnName,
+
+                            expPars.type.Name+"_"+it.PropertyName,
+                            expPars.type.Name+"_"+it.DbColumnName,
+
+                            expPars.shortName+it.PropertyName,
+                            expPars.shortName+it.DbColumnName,
+                         };
+                        return new { it, array };
+                    }).ToList();
+                    var columnInfo= list.FirstOrDefault(y => y.array.Select(z=>z.ToLower()).Contains(viewColumns.PropertyName.ToLower()));
+                    if (columnInfo != null)
                     {
-                        var value = joinModelPropertiesWithSN.First(it => it.asName.Equals(viewColumn.PropertyName, StringComparison.CurrentCultureIgnoreCase));
-                        if (viewColumn.PropertyName.Equals(value.asName, StringComparison.CurrentCultureIgnoreCase))
-                            selectItems.Add(new KeyValuePair<string, object>(expPars.shortName, value));
-                        break;
+                        JoinMapper joinMapper = new JoinMapper()
+                        {
+                             asName=viewColumns.PropertyName,
+                             dbName=columnInfo.it.DbColumnName
+                        };
+                        selectItems.Add(new KeyValuePair<string, object>(expPars.shortName,joinMapper));
+                        isbreak = true;
                     }
                 }
             }
diff --git a/Src/Asp.Net/SqlSugar/SqlSugar.csproj b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
index 6f391c58e..58d3a0451 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugar.csproj
+++ b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
@@ -96,6 +96,7 @@
     <Compile Include="Abstract\FilterProvider\FilterProvider.cs" />
     <Compile Include="Abstract\SaveableProvider\StorageableDataTable.cs" />
     <Compile Include="Abstract\SugarProvider\SqlSugarCoreProvider.cs" />
+    <Compile Include="Entities\JoinMapper.cs" />
     <Compile Include="ExpressionsToSql\Subquery\SubTemplate.cs" />
     <Compile Include="ExpressionsToSql\Subquery\SubqueryableN.cs" />
     <Compile Include="Interface\IFastBuilder.cs" />