diff --git a/uni_modules/uts-tests/utssdk/KeyWord.uts b/uni_modules/uts-tests/utssdk/KeyWord.uts
index 5ea2bb67f34a25f988c5fc68b0b0b0471273b65f..c294fabc136b54746471db61eb53f8317a6ef4be 100644
--- a/uni_modules/uts-tests/utssdk/KeyWord.uts
+++ b/uni_modules/uts-tests/utssdk/KeyWord.uts
@@ -82,7 +82,7 @@ export function testKeyWord() : Result {
     test('typeof', () => {
       let new1 = new User()
       expect(typeof (new1)).toEqual('object')
-
+      //expect(typeof null).toEqual('object')
       // #ifdef APP-ANDROID || APP-IOS
       expect(typeof (123456.789)).toEqual('Double')
       //expect(typeof(789778979798797987979)).toEqual('number')
diff --git a/uni_modules/uts-tests/utssdk/UTSJSONObject.uts b/uni_modules/uts-tests/utssdk/UTSJSONObject.uts
index b1a896245b42b28b34ad460c967e65c0e01b9155..4b41a23252564545ee86d45898b1e25d4f920af6 100644
--- a/uni_modules/uts-tests/utssdk/UTSJSONObject.uts
+++ b/uni_modules/uts-tests/utssdk/UTSJSONObject.uts
@@ -43,6 +43,56 @@ export function testUTSJSONObject() : Result {
 
       expect(result.toJSONObject().toJSONString()).toEqual('{"opt":"xxxx","service":{"array":[{"name":"xxx","type":0}],"name":"0xxxb34fb","type":0}}');
 
+
+      type TestData = {
+      	num:number;
+      	num2:number;
+      	str:string;
+      }
+      
+      let data1:TestData = {
+      	num:1,
+      	num2:2.369,
+      	str:'test'
+      }
+      let data2 = JSON.parse<UTSJSONObject>(JSON.stringify(data1))
+      
+      expect(data2!.toJSONString()).toEqual('{"str":"test","num":1.0,"num2":2.369}')
+      
+      class TestData2 implements IJsonStringify{
+      	toJSON():any|null{
+      		return "122"
+      	}
+      }
+      
+      let testData2 = TestData2()
+      let dataClass = UTSAndroid.getJavaClass(data2)
+      let data3 = {
+      	strA:"stringA",
+      	dataClass:dataClass,
+      	booleanB:false,
+      	testData:testData2
+      }
+      
+      expect(data3!.toJSONString()).toEqual('{"testData":"122","strA":"stringA","dataClass":"io.dcloud.uts.UTSJSONObject","booleanB":false}')
+      
+      
+      type TestData4 = {
+      	name:string,
+      	data:any,
+      }
+      
+      let data4 : TestData4 = {
+      	name:"张三",
+      	data:data1
+      }
+      
+      let data5 = {
+      	data4 :data4
+      }
+      
+      expect(data5!.toJSONString()).toEqual('{"data4":{"data":{"num":1,"num2":2.369,"str":"test"},"name":"张三"}}')
+      
       // #endif
     })