diff --git a/UnitTestDll/Eviltestor/EvilTestor.cs b/UnitTestDll/Eviltestor/EvilTestor.cs
index d5514cc..709c2ce 100644
--- a/UnitTestDll/Eviltestor/EvilTestor.cs
+++ b/UnitTestDll/Eviltestor/EvilTestor.cs
@@ -91,5 +91,11 @@ public static void UnitTest_11()
         {
             Test10.TestInnerClass();
         }
+
+        public static void UnitTest_12()
+        {
+            Test12.TestOverrideObjectMethod();
+        }
+
     }
 }
diff --git a/UnitTestDll/Eviltestor/test12/Test12.cs b/UnitTestDll/Eviltestor/test12/Test12.cs
new file mode 100644
index 0000000..1d98cf7
--- /dev/null
+++ b/UnitTestDll/Eviltestor/test12/Test12.cs
@@ -0,0 +1,42 @@
+
+using UnitTest;
+
+/// <summary>
+/// 测试覆盖系统方法
+/// </summary>
+public class Test12
+{
+    public string Name;
+    public int Age;
+
+    public override string ToString()
+    {
+        return string.Format("Name:{0}, Age:{1}", Name, Age);
+    }
+
+    public override bool Equals(object obj)
+    {
+        if (!(obj is Test12))
+        {
+            return false;
+        }
+        var o = (Test12) obj;
+        return Name == o.Name && Age == o.Age;
+    }
+
+    public override int GetHashCode()
+    {
+        //for test
+        return 123456789;
+    }
+
+    public static void TestOverrideObjectMethod()
+    {
+        Test12 t1 = new Test12 {Name = "Test1", Age = 18};
+        Test12 t2 = new Test12 {Name = "Test1", Age = 18};
+
+        Logger.Log("t1.ToString(): " + t1);
+        Logger.Log("t1.GetHashCode(): " + t1.GetHashCode());
+        Logger.Log("t1.Equals(t2): " + t1.Equals(t2));
+    }
+}
diff --git a/UnitTestDll/UnitTestDll.csproj b/UnitTestDll/UnitTestDll.csproj
index 5e45a84..7d8af27 100644
--- a/UnitTestDll/UnitTestDll.csproj
+++ b/UnitTestDll/UnitTestDll.csproj
@@ -49,6 +49,7 @@
     <Compile Include="Eviltestor\test08\Test08.cs" />
     <Compile Include="Eviltestor\test09\Test09.cs" />
     <Compile Include="Eviltestor\test10.cs" />
+    <Compile Include="Eviltestor\test12\Test12.cs" />
     <Compile Include="LightTestor\ExpTest_50.cs" />
     <Compile Include="LightTestor\ExpTest_60.cs" />
     <Compile Include="LightTestor\ExpTest_70.cs" />