diff --git a/OrmTest/OrmTest.csproj b/OrmTest/OrmTest.csproj
index e6cfed6d4..f163b2ed9 100644
--- a/OrmTest/OrmTest.csproj
+++ b/OrmTest/OrmTest.csproj
@@ -61,9 +61,10 @@
     <Compile Include="PerformanceTesting\PerformanceBase.cs" />
     <Compile Include="PerformanceTesting\SqlSugarPerformance.cs" />
     <Compile Include="UnitTest\Delete.cs" />
-    <Compile Include="UnitTest\ExpressionTest\ExpTestBase.cs" />
+    <Compile Include="UnitTest\UnitTestBase.cs" />
     <Compile Include="UnitTest\ExpressionTest\Field.cs" />
     <Compile Include="UnitTest\Insert.cs" />
+    <Compile Include="UnitTest\Mapping .cs" />
     <Compile Include="UnitTest\Query\JoinQuery.cs" />
     <Compile Include="UnitTest\ExpressionTest\Method.cs" />
     <Compile Include="UnitTest\ExpressionTest\Select.cs" />
diff --git a/OrmTest/UnitTest/Delete.cs b/OrmTest/UnitTest/Delete.cs
index f925bd9ed..aee3b5364 100644
--- a/OrmTest/UnitTest/Delete.cs
+++ b/OrmTest/UnitTest/Delete.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest
 {
-    public class Delete : ExpTestBase
+    public class Delete : UnitTestBase
     {
         private Delete() { }
         public Delete(int eachCount)
diff --git a/OrmTest/UnitTest/ExpressionTest/Field.cs b/OrmTest/UnitTest/ExpressionTest/Field.cs
index 8e5404ca4..583a00319 100644
--- a/OrmTest/UnitTest/ExpressionTest/Field.cs
+++ b/OrmTest/UnitTest/ExpressionTest/Field.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class Field : ExpTestBase
+    public class Field : UnitTestBase
     {
         private Field() { }
         public Field(int eachCount)
diff --git a/OrmTest/UnitTest/ExpressionTest/Method.cs b/OrmTest/UnitTest/ExpressionTest/Method.cs
index 896bfabd3..0e180527d 100644
--- a/OrmTest/UnitTest/ExpressionTest/Method.cs
+++ b/OrmTest/UnitTest/ExpressionTest/Method.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class Method : ExpTestBase
+    public class Method : UnitTestBase
     {
         private Method() { }
         public Method(int eachCount)
diff --git a/OrmTest/UnitTest/ExpressionTest/Select.cs b/OrmTest/UnitTest/ExpressionTest/Select.cs
index 1c3c6816a..4686721ce 100644
--- a/OrmTest/UnitTest/ExpressionTest/Select.cs
+++ b/OrmTest/UnitTest/ExpressionTest/Select.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class Select : ExpTestBase
+    public class Select : UnitTestBase
     {
         private Select() { }
         public Select(int eachCount)
diff --git a/OrmTest/UnitTest/ExpressionTest/Where.cs b/OrmTest/UnitTest/ExpressionTest/Where.cs
index adcbe9396..d842deadb 100644
--- a/OrmTest/UnitTest/ExpressionTest/Where.cs
+++ b/OrmTest/UnitTest/ExpressionTest/Where.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class Where : ExpTestBase
+    public class Where : UnitTestBase
     {
         private Where() { }
         public Where(int eachCount)
diff --git a/OrmTest/UnitTest/Insert.cs b/OrmTest/UnitTest/Insert.cs
index 5f11ca04b..98f283296 100644
--- a/OrmTest/UnitTest/Insert.cs
+++ b/OrmTest/UnitTest/Insert.cs
@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class Insert : ExpTestBase
+    public class Insert : UnitTestBase
     {
         private Insert() { }
         public Insert(int eachCount)
@@ -19,34 +19,40 @@ namespace OrmTest.UnitTest
         public void Init() {
             var db = GetInstance();
             var insertObj = new Student() { Name="jack",CreateTime=DateTime.Now };
-            var insertObjs = new List<Student>() { insertObj }.ToArray();
             db.IgnoreColumns.Add("TestId", "Student");
             //db.MappingColumns.Add("id","dbid", "Student");
            
-            var s1= db.Insertable<Student>(insertObj).ToSql();
+            var s1= db.Insertable(insertObj).ToSql();
 
             //Insert reutrn Command Count
-            var s2=db.Insertable<Student>(insertObj).ExecuteCommand();
+            var s2=db.Insertable(insertObj).ExecuteCommand();
 
             db.IgnoreColumns = null;
             //Only  insert  Name 
-            var s3 = db.Insertable<Student>(insertObj).InsertColumns(it => new {it.Name}).ToSql();
+            var s3 = db.Insertable(insertObj).InsertColumns(it => new {it.Name}).ToSql();
 
             //Ignore  Name and TestId
-            var s4=db.Insertable<Student>(insertObj).IgnoreColumns(it => new{ it.Name,it.TestId }).ToSql();
+            var s4=db.Insertable(insertObj).IgnoreColumns(it => new{ it.Name,it.TestId }).ToSql();
 
             //Ignore  Name and TestId
-            var s5 = db.Insertable<Student>(insertObj).IgnoreColumns(it => it == "Name" || it == "TestId").With(SqlWith.UpdLock).ToSql();
+            var s5 = db.Insertable(insertObj).IgnoreColumns(it => it == "Name" || it == "TestId").With(SqlWith.UpdLock).ToSql();
 
             //Use Lock
-            var s6 =db.Insertable<Student>(insertObj).With(SqlWith.UpdLock).ToSql();
+            var s6 =db.Insertable(insertObj).With(SqlWith.UpdLock).ToSql();
 
             //ToSql
-            var s7= db.Insertable<Student>(insertObj).With(SqlWith.UpdLock)
+            var s7= db.Insertable(insertObj).With(SqlWith.UpdLock)
                 .InsertColumns(it => new { it.Name }).ToSql();
 
+            db.IgnoreColumns = new IgnoreComumnList();
+            db.IgnoreColumns.Add("TestId", "Student");
             //Insert List<T>
-            var s8= db.Insertable<Student>(insertObjs).With(SqlWith.UpdLock).ToSql();
+            var insertObjs = new List<Student>();
+            for (int i = 0; i < 1000; i++)
+            {
+                insertObjs.Add(new Student() { Name="name"+i });
+            }
+            var s8= db.Insertable(insertObjs.ToArray()).InsertColumns(it=>new{ it.Name}).With(SqlWith.UpdLock).ToSql();
         }
 
         public SqlSugarClient GetInstance()
diff --git a/OrmTest/UnitTest/Mapping .cs b/OrmTest/UnitTest/Mapping .cs
new file mode 100644
index 000000000..7db4d6ef4
--- /dev/null
+++ b/OrmTest/UnitTest/Mapping .cs	
@@ -0,0 +1,31 @@
+using OrmTest.Models;
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest.UnitTest
+{
+    public class Mapping:UnitTestBase
+    {
+        private Mapping() { }
+        public Mapping(int eachCount)
+        {
+            this.Count = eachCount;
+        }
+
+        public void Init() {
+
+            var db = GetInstance();
+            var s1= db.Queryable<Student>().ToSql();
+        }
+
+        public SqlSugarClient GetInstance()
+        {
+            SqlSugarClient db = new SqlSugarClient(new AttrbuitesCofnig() { ConnectionString = Config.ConnectionString, DbType = DbType.SqlServer, IsAutoCloseConnection = true, EntityNamespace= "OrmTest.Models" });
+            return db;
+        }
+    }
+}
diff --git a/OrmTest/UnitTest/Query/JoinQuery.cs b/OrmTest/UnitTest/Query/JoinQuery.cs
index 20a71cd50..f17a440e5 100644
--- a/OrmTest/UnitTest/Query/JoinQuery.cs
+++ b/OrmTest/UnitTest/Query/JoinQuery.cs
@@ -8,7 +8,7 @@ using System.Linq.Expressions;
 using OrmTest.Models;
 namespace OrmTest.UnitTest
 {
-    public class JoinQuery : ExpTestBase
+    public class JoinQuery : UnitTestBase
     {
         private JoinQuery() { }
         public JoinQuery(int eachCount)
diff --git a/OrmTest/UnitTest/Query/SelectQuery.cs b/OrmTest/UnitTest/Query/SelectQuery.cs
index b080fee42..085769ad5 100644
--- a/OrmTest/UnitTest/Query/SelectQuery.cs
+++ b/OrmTest/UnitTest/Query/SelectQuery.cs
@@ -8,7 +8,7 @@ using System.Linq.Expressions;
 using OrmTest.Models;
 namespace OrmTest.UnitTest
 {
-    public class SelectQuery : ExpTestBase
+    public class SelectQuery : UnitTestBase
     {
         private SelectQuery() { }
         public SelectQuery(int eachCount)
diff --git a/OrmTest/UnitTest/Query/SingleQuery.cs b/OrmTest/UnitTest/Query/SingleQuery.cs
index efc1162fc..844c7943f 100644
--- a/OrmTest/UnitTest/Query/SingleQuery.cs
+++ b/OrmTest/UnitTest/Query/SingleQuery.cs
@@ -8,7 +8,7 @@ using System.Linq.Expressions;
 using OrmTest.Models;
 namespace OrmTest.UnitTest
 {
-    public class SingleQuery : ExpTestBase
+    public class SingleQuery : UnitTestBase
     {
         private SingleQuery() { }
         public SingleQuery(int eachCount)
diff --git a/OrmTest/UnitTest/Setting/Attribute.cs b/OrmTest/UnitTest/Setting/Attribute.cs
index a57a7f56b..e0e8da931 100644
--- a/OrmTest/UnitTest/Setting/Attribute.cs
+++ b/OrmTest/UnitTest/Setting/Attribute.cs
@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class Attribute : ExpTestBase
+    public class Attribute : UnitTestBase
     {
         public Attribute(int eachCount)
         {
diff --git a/OrmTest/UnitTest/Setting/AutoClose.cs b/OrmTest/UnitTest/Setting/AutoClose.cs
index 55dabc6c0..738fe3aca 100644
--- a/OrmTest/UnitTest/Setting/AutoClose.cs
+++ b/OrmTest/UnitTest/Setting/AutoClose.cs
@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class AutoClose : ExpTestBase
+    public class AutoClose : UnitTestBase
     {
         public AutoClose(int eachCount)
         {
diff --git a/OrmTest/UnitTest/Setting/MapColumn.cs b/OrmTest/UnitTest/Setting/MapColumn.cs
index 9ed1b4f51..5a0a38777 100644
--- a/OrmTest/UnitTest/Setting/MapColumn.cs
+++ b/OrmTest/UnitTest/Setting/MapColumn.cs
@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class MapColumn : ExpTestBase
+    public class MapColumn : UnitTestBase
     {
         public SqlSugarClient GetInstance()
         {
diff --git a/OrmTest/UnitTest/Setting/MapTable.cs b/OrmTest/UnitTest/Setting/MapTable.cs
index dad861d67..81843a385 100644
--- a/OrmTest/UnitTest/Setting/MapTable.cs
+++ b/OrmTest/UnitTest/Setting/MapTable.cs
@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace OrmTest.UnitTest
 {
-    public class MapTable : ExpTestBase
+    public class MapTable : UnitTestBase
     {
         public void Init()
         {
diff --git a/OrmTest/UnitTest/ExpressionTest/ExpTestBase.cs b/OrmTest/UnitTest/UnitTestBase.cs
similarity index 98%
rename from OrmTest/UnitTest/ExpressionTest/ExpTestBase.cs
rename to OrmTest/UnitTest/UnitTestBase.cs
index b83c6fe22..c4d76d06b 100644
--- a/OrmTest/UnitTest/ExpressionTest/ExpTestBase.cs
+++ b/OrmTest/UnitTest/UnitTestBase.cs
@@ -4,7 +4,7 @@ using SqlSugar;
 using System.Linq;
 namespace OrmTest.UnitTest
 {
-    public class ExpTestBase
+    public class UnitTestBase
     {
         public int Count { get; set; }
         private DateTime BeginTime { get; set; }
diff --git a/SqlSugar/Abstract/DbProvider/DbMaintenanceProvider/DbMaintenanceProvider.cs b/SqlSugar/Abstract/DbProvider/DbMaintenanceProvider/DbMaintenanceProvider.cs
index 5952713fc..f52a7a441 100644
--- a/SqlSugar/Abstract/DbProvider/DbMaintenanceProvider/DbMaintenanceProvider.cs
+++ b/SqlSugar/Abstract/DbProvider/DbMaintenanceProvider/DbMaintenanceProvider.cs
@@ -86,33 +86,36 @@ namespace SqlSugar
                          {
                              this.GetTableInfoList();
                          }
-                         var entity = this.Context.MappingTables.SingleOrDefault(it => it.DbTableName.Equals(tableName, StringComparison.CurrentCultureIgnoreCase));
-                         var entityName = entity == null ? tableName : entity.EntityName;
-                         var assembly = Assembly.Load(this.Context.EntityNamespace.Split('.').First());
-                         foreach (var item in assembly.GetType(this.Context.EntityNamespace + "." + entityName).GetProperties())
+                         var entities = this.Context.MappingTables.Where(it => it.DbTableName.Equals(tableName, StringComparison.CurrentCultureIgnoreCase)).ToList();
+                         foreach (var entity in entities)
                          {
-                             var isVirtual = item.GetGetMethod().IsVirtual;
-                             if (isVirtual) continue;
-                             var sugarColumn = item.GetCustomAttributes(typeof(SugarColumn), true)
-                             .Where(it => it is SugarColumn)
-                             .Select(it => (SugarColumn)it)
-                             .Where(it => it.ColumnName.IsValuable())
-                             .FirstOrDefault();
-                             if (sugarColumn.IsNullOrEmpty())
+                             var entityName = entity == null ? tableName : entity.EntityName;
+                             var assembly = Assembly.Load(this.Context.EntityNamespace.Split('.').First());
+                             foreach (var item in assembly.GetType(this.Context.EntityNamespace + "." + entityName).GetProperties())
                              {
-                                 reval.Add(new DbColumnInfo() { ColumnName = item.Name });
-                             }
-                             else
-                             {
-                                 if (sugarColumn.IsIgnore == false)
+                                 var isVirtual = item.GetGetMethod().IsVirtual;
+                                 if (isVirtual) continue;
+                                 var sugarColumn = item.GetCustomAttributes(typeof(SugarColumn), true)
+                                 .Where(it => it is SugarColumn)
+                                 .Select(it => (SugarColumn)it)
+                                 .Where(it => it.ColumnName.IsValuable())
+                                 .FirstOrDefault();
+                                 if (sugarColumn.IsNullOrEmpty())
                                  {
-                                     var columnInfo = new DbColumnInfo();
-                                     columnInfo.ColumnName = sugarColumn.ColumnName.IsNullOrEmpty() ? item.Name : sugarColumn.ColumnName;
-                                     columnInfo.IsPrimarykey = sugarColumn.IsPrimaryKey;
-                                     columnInfo.IsIdentity = sugarColumn.IsIdentity;
-                                     columnInfo.ColumnDescription = sugarColumn.ColumnDescription;
-                                     columnInfo.TableName = entity.IsNullOrEmpty() ? tableName : entity.DbTableName;
-                                     reval.Add(columnInfo);
+                                     reval.Add(new DbColumnInfo() { ColumnName = item.Name });
+                                 }
+                                 else
+                                 {
+                                     if (sugarColumn.IsIgnore == false)
+                                     {
+                                         var columnInfo = new DbColumnInfo();
+                                         columnInfo.ColumnName = sugarColumn.ColumnName.IsNullOrEmpty() ? item.Name : sugarColumn.ColumnName;
+                                         columnInfo.IsPrimarykey = sugarColumn.IsPrimaryKey;
+                                         columnInfo.IsIdentity = sugarColumn.IsIdentity;
+                                         columnInfo.ColumnDescription = sugarColumn.ColumnDescription;
+                                         columnInfo.TableName = entity.IsNullOrEmpty() ? tableName : entity.DbTableName;
+                                         reval.Add(columnInfo);
+                                     }
                                  }
                              }
                          }
diff --git a/SqlSugar/Abstract/DbProvider/SqlBuilderProvider/DMLBuilder/InsertBuilder.cs b/SqlSugar/Abstract/DbProvider/SqlBuilderProvider/DMLBuilder/InsertBuilder.cs
index aa2c14930..baf253380 100644
--- a/SqlSugar/Abstract/DbProvider/SqlBuilderProvider/DMLBuilder/InsertBuilder.cs
+++ b/SqlSugar/Abstract/DbProvider/SqlBuilderProvider/DMLBuilder/InsertBuilder.cs
@@ -46,6 +46,26 @@ namespace SqlSugar
             }
         }
 
+        public virtual string SqlTemplateBatch {
+            get {
+                return "INSERT {0} ({1})";
+            }
+        }
+
+        public virtual string SqlTemplateBatchSelect {
+            get {
+                return "{0} AS {1}";
+            }
+        }
+
+        public virtual string SqlTemplateBatchUnion
+        {
+            get
+            {
+                return "\t\r\nUNION ALL ";
+            }
+        }
+
         public virtual void Clear()
         {
 
@@ -78,9 +98,60 @@ namespace SqlSugar
         }
         public virtual string ToSqlString()
         {
-            string columnsString = string.Join(",", this.DbColumnInfoList.Select(it => Builder.GetTranslationColumnName(it.ColumnName)));
-            string columnParametersString = string.Join(",", this.DbColumnInfoList.Select(it => Builder.SqlParameterKeyWord + it.ColumnName));
-            return string.Format(SqlTemplate, GetTableNameString, columnsString, columnParametersString);
+            var groupList = DbColumnInfoList.GroupBy(it => it.TableId).ToList();
+            var isSingle = groupList.Count() == 1;
+            string columnsString = string.Join(",", groupList.First().Select(it => Builder.GetTranslationColumnName(it.ColumnName)));
+            if (isSingle)
+            {
+                string columnParametersString = string.Join(",", this.DbColumnInfoList.Select(it => Builder.SqlParameterKeyWord + it.ColumnName));
+                return string.Format(SqlTemplate, GetTableNameString, columnsString, columnParametersString);
+            }
+            else {
+                StringBuilder batchInsetrSql = new StringBuilder();
+                int pageSize = 200;
+                int pageIndex = 1;
+                int totalRecord = groupList.Count;
+                int pageCount = (totalRecord + pageSize - 1) / pageSize;
+                while (pageCount >= pageIndex) {
+                    batchInsetrSql.AppendFormat(SqlTemplateBatch, GetTableNameString, columnsString);
+                    int i = 0;
+                    foreach (var columns in groupList.Skip((pageIndex-1)*pageSize).Take(pageSize).ToList())
+                    {
+                        var isFirst = i == 0;
+                        if (!isFirst)
+                        {
+                            batchInsetrSql.Append(SqlTemplateBatchUnion);
+                        }
+                        batchInsetrSql.Append("\r\n SELECT " + string.Join(",", columns.Select(it => string.Format(SqlTemplateBatchSelect, FormatValue(it.Value), it.ColumnName))));
+                        ++i;
+                    }
+                    pageIndex++;
+                    batchInsetrSql.Append("\r\nGO\r\n");
+                }
+                return batchInsetrSql.ToString();
+            }
+        }
+
+        public object FormatValue(object value)
+        {
+            if (value == null)
+            {
+                return "NULL";
+            }
+            else {
+                var type = value.GetType();
+                if (type == PubConst.DateType)
+                {
+                    return "'" + value.ObjToDate().ToString("yyyy-MM-dd hh:mm:ss.ms") + "'";
+                }
+                else if (type == PubConst.StringType|| type == PubConst.ObjType)
+                {
+                    return "N'" + value.ToString().ToSqlFilter() + "'";
+                }
+                else {
+                    return "N'" + value.ToString() + "'";
+                }
+            }
         }
     }
 }
diff --git a/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs b/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
index 9562be779..d9544d68b 100644
--- a/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
+++ b/SqlSugar/Abstract/DeleteProvider/DeleteableProvider.cs
@@ -105,7 +105,14 @@ namespace SqlSugar
             }
             return this;
         }
-
+        public IDeleteable<T> In<PkType>(List<PkType> primaryKeyValues) {
+            if (primaryKeyValues == null || primaryKeyValues.Count() == 0)
+            {
+                Where("1=2 ");
+                return this;
+            }
+            return In<PkType>(primaryKeyValues.ToArray());
+        }
         public IDeleteable<T> In<PkType>(PkType[] primaryKeyValues)
         {
             if (primaryKeyValues == null || primaryKeyValues.Count() == 0)
diff --git a/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs b/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
index 52f39216c..c6fa3976b 100644
--- a/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
+++ b/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
@@ -153,6 +153,7 @@ namespace SqlSugar
                     insertItem.Add(columnInfo);
                 }
                 this.InsertBuilder.DbColumnInfoList.AddRange(insertItem);
+                ++i;
             }
         }
         private string GetDbColumnName(string entityName)
diff --git a/SqlSugar/Interface/IDeleteable.cs b/SqlSugar/Interface/IDeleteable.cs
index d29d972fe..bdc554968 100644
--- a/SqlSugar/Interface/IDeleteable.cs
+++ b/SqlSugar/Interface/IDeleteable.cs
@@ -16,6 +16,7 @@ namespace SqlSugar
         IDeleteable<T> Where(List<T> deleteObjs);
         IDeleteable<T> In<PkType>(PkType primaryKeyValue);
         IDeleteable<T> In<PkType>(PkType[] primaryKeyValues);
+        IDeleteable<T> In<PkType>(List<PkType> primaryKeyValues);
         IDeleteable<T> Where(string whereString,object whereObj=null);
         KeyValuePair<string, List<SugarParameter>> ToSql();
     }
diff --git a/SqlSugar/SqlSugarClient.cs b/SqlSugar/SqlSugarClient.cs
index 46b85496c..53fb7df7f 100644
--- a/SqlSugar/SqlSugarClient.cs
+++ b/SqlSugar/SqlSugarClient.cs
@@ -253,6 +253,11 @@ namespace SqlSugar
             reval.Init();
             return reval;
         }
+        public virtual IInsertable<T> Insertable<T>(List<T> insertObjs) where T : class, new()
+        {
+            Check.ArgumentNullException(insertObjs, "Insertable.insertObjs can't be null");
+            return this.Insertable(insertObjs.ToArray());
+        }
         public virtual IInsertable<T> Insertable<T>(T insertObj) where T : class, new()
         {
             return this.Insertable(new T[] { insertObj });