diff --git a/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs b/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs
index 4e6b90081..9776b11d0 100644
--- a/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs
+++ b/Src/Asp.NetCore2/MongoDbTest/UnitTest/Cases.cs
@@ -25,7 +25,11 @@ namespace MongoDbTest
             Delete.Init();
             InsertOrUpdate.Init();
             Unitdafasdys.Init();
+
+            //主键不是ObjectId类型用例 
+            //The primary key is not an ObjectId type use case
             LongPrimaryKey.Init();
+            GuidPrimaryKey.Init();
         } 
         public static void ThrowUnitError()
         {
diff --git a/Src/Asp.NetCore2/MongoDbTest/UnitTest/GuidPrimaryKey.cs b/Src/Asp.NetCore2/MongoDbTest/UnitTest/GuidPrimaryKey.cs
new file mode 100644
index 000000000..7b33a387b
--- /dev/null
+++ b/Src/Asp.NetCore2/MongoDbTest/UnitTest/GuidPrimaryKey.cs
@@ -0,0 +1,56 @@
+using SqlSugar.MongoDb;
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MongoDbTest 
+{
+    internal class GuidPrimaryKey
+    {
+        public static void Init() 
+        {
+            var db = DbHelper.GetNewDb();
+            db.DbMaintenance.TruncateTable<Student>();
+            var id = Guid.NewGuid();
+            db.Insertable(new Student()
+            {
+                Name="a",
+                Id=id
+                 
+            }).ExecuteCommand();
+
+            var data=db.Queryable<Student>().Where(it => it.Id == id).ToList();
+            if (data.First().Id != id) Cases.ThrowUnitError();
+            data.First().Name = "a2";
+            db.Updateable(data).ExecuteCommand();
+            var data2 = db.Queryable<Student>().Where(it => it.Id == id).ToList();
+            if (data.First().Name !="a2") Cases.ThrowUnitError();
+            Console.WriteLine(db.Queryable<Student>().Count());
+            db.Deleteable<Student>().Where(it=>it.Id==id).ExecuteCommand();
+            if(db.Queryable<Student>().Count()!=0) Cases.ThrowUnitError();
+            db.Insertable(new Student()
+            {
+                Name = "a" ,
+                Id=id
+            }).ExecuteCommand();
+            var rows=db.Deleteable<Student>().Where(it => new Guid[] { id}.Contains(it.Id)).ExecuteCommand();
+            if (db.Queryable<Student>().Count() != 0) Cases.ThrowUnitError();
+            db.Insertable(new Student()
+            {
+                Name = "a",
+                Id=id
+            }).ExecuteCommand();
+            var row2=db.Deleteable<Student>(new Student() { Id=id}).ExecuteCommand();
+            if (db.Queryable<Student>().Count() != 0) Cases.ThrowUnitError();
+        }
+
+        [SqlSugar.SugarTable("UnitStutsdsdfr5fazzz1")]
+        public class Student: MongoDbBaseGuid
+        { 
+            public string Name { get; set; }
+        }
+    }
+}