diff --git a/uni_modules/uts-tests/utssdk/UTSJSONObject.uts b/uni_modules/uts-tests/utssdk/UTSJSONObject.uts
index 4b41a23252564545ee86d45898b1e25d4f920af6..fa754163c657e3b6cba68e56de547905a6dbdfd5 100644
--- a/uni_modules/uts-tests/utssdk/UTSJSONObject.uts
+++ b/uni_modules/uts-tests/utssdk/UTSJSONObject.uts
@@ -93,6 +93,21 @@ export function testUTSJSONObject() : Result {
       
       expect(data5!.toJSONString()).toEqual('{"data4":{"data":{"num":1,"num2":2.369,"str":"test"},"name":"张三"}}')
       
+      class TestData6 implements IJsonStringify{
+      	toJSON():any|null{
+      		return JSON.parse("22")
+      	}
+      }
+      let testData6 = TestData6()
+      let data6 = {
+      	data:testData6,
+      	array:[1,"22",false],
+      	name:"data6"
+      }
+      
+      expect(data6!.toJSONString()).toEqual('{"data":22.0,"array":[1,"22",false],"name":"data6"}')
+      console.log(data6.toJSONString())
+      
       // #endif
     })