diff --git a/Src/Asp.Net/SqlServerTest/Demos/CS_TeacherStudent.cs b/Src/Asp.Net/SqlServerTest/Demos/CS_TeacherStudent.cs
new file mode 100644
index 000000000..272ae4df2
--- /dev/null
+++ b/Src/Asp.Net/SqlServerTest/Demos/CS_TeacherStudent.cs
@@ -0,0 +1,88 @@
+using System;
+using System.Linq;
+using System.Text;
+
+namespace  OrmTest.Demo
+{
+    public class CS_TeacherStudent
+    {
+        
+        /// <summary>
+        /// Desc:- 
+        /// Default:(newid()) 
+        /// Nullable:False 
+        /// </summary>
+        public Guid tabId {get;set;}
+
+        /// <summary>
+        /// Desc:教师Id 
+        /// Default:- 
+        /// Nullable:False 
+        /// </summary>
+        public string teacherId {get;set;}
+
+        /// <summary>
+        /// Desc:教师课程Id(对应TeacherCourse.tabId) 
+        /// Default:- 
+        /// Nullable:False 
+        /// </summary>
+        public string teacherCourseId {get;set;}
+
+        /// <summary>
+        /// Desc:教学头内的序号 
+        /// Default:- 
+        /// Nullable:True 
+        /// </summary>
+        public int? ordInTC {get;set;}
+
+        /// <summary>
+        /// Desc:学号 
+        /// Default:- 
+        /// Nullable:False 
+        /// </summary>
+        public string stuId {get;set;}
+
+        /// <summary>
+        /// Desc:学生姓名 
+        /// Default:- 
+        /// Nullable:True 
+        /// </summary>
+        public string stuName {get;set;}
+
+        /// <summary>
+        /// Desc:性别 
+        /// Default:- 
+        /// Nullable:True 
+        /// </summary>
+        public string stuSex {get;set;}
+
+        /// <summary>
+        /// Desc:所属院系Id 
+        /// Default:- 
+        /// Nullable:True 
+        /// </summary>
+        public string deptId {get;set;}
+
+        /// <summary>
+        /// Desc:所属班级Id 
+        /// Default:- 
+        /// Nullable:True 
+        /// </summary>
+        public string classId {get;set;}
+
+        /// <summary>
+        /// Desc:不能对应班级代码的班级名称时源班级名称 
+        /// Default:- 
+        /// Nullable:True 
+        /// </summary>
+        public string sclassName {get;set;}
+
+        /// <summary>
+        /// Desc:- 
+        /// Default:((1)) 
+        /// Nullable:True 
+        /// </summary>
+        public int? validFlag {get;set;}
+
+    }
+}
diff --git a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
index 5e005b75c..c8ca32a48 100644
--- a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
+++ b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
@@ -54,6 +54,7 @@
     <Compile Include="Demos\8_JoinSql.cs" />
     <Compile Include="Demos\5_DbFirst.cs" />
     <Compile Include="Demos\4_Delete.cs" />
+    <Compile Include="Demos\CS_TeacherStudent.cs" />
     <Compile Include="Demos\DemoBase.cs" />
     <Compile Include="Demos\3_Insert.cs" />
     <Compile Include="Demos\1_Query.cs" />
diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/Update.cs b/Src/Asp.Net/SqlServerTest/UnitTest/Update.cs
index bde5ffe24..62a1fa491 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/Update.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/Update.cs
@@ -116,10 +116,10 @@ namespace OrmTest.UnitTest
             string name = "x";
             var t10 = db.Updateable<Student>().UpdateColumns(it => new Student() { Name =name, SchoolId=updateObj.SchoolId }).Where(it=>it.Id==11).ToSql();
             base.Check(@"UPDATE [STudent]  SET
-            [SchoolId] = @Const0 , [Name] = @const3   WHERE ( [ID] = @Id1 )", new List<SugarParameter>() {
-                           new SugarParameter("@const3","x"),
-                           new SugarParameter("@Const0",18),
-                           new SugarParameter("@Id1",11)},
+            [SchoolId] = @Const1 , [Name] = @Const0   WHERE ( [ID] = @Id2 )", new List<SugarParameter>() {
+                           new SugarParameter("@Const1",18),
+                           new SugarParameter("@Const0","x"),
+                           new SugarParameter("@Id2",11)},
                                t10.Key,
                                t10.Value,
                                "Update 10 error"
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MemberInitExpressionResolve.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MemberInitExpressionResolve.cs
index 0e0811bd9..32abdfdd2 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MemberInitExpressionResolve.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MemberInitExpressionResolve.cs
@@ -59,9 +59,10 @@ namespace SqlSugar
                 {
                     base.Expression = item;
                     base.Start();
-                    string parameterName = this.Context.SqlParameterKeyWord + "const" + this.ContentIndex;
+                    string parameterName = this.Context.SqlParameterKeyWord + ExpressionConst.Const+ this.Context.ParameterIndex;
                     parameter.Context.Result.Append(base.Context.GetEqString(memberName, parameterName));
                     this.Context.Parameters.Add(new SugarParameter(parameterName, parameter.CommonTempData));
+                    this.Context.ParameterIndex++;
                 }
                 else if (item is MethodCallExpression)
                 {
@@ -79,7 +80,6 @@ namespace SqlSugar
                         base.Expression = item;
                         base.Start();
                         parameter.IsAppendResult();
-                        string parameterName = this.Context.SqlParameterKeyWord + "const" + +this.ContentIndex; ;
                         parameter.Context.Result.Append(base.Context.GetEqString(memberName, parameter.CommonTempData.ObjToString()));
                         base.Context.Result.CurrentParameter = null;
                     }