At present, the functions of all kinds of electronic products are becoming more complex and intelligent, the IC chip can be seen everywhere. How to accurately judge the IC chip is normal or not is particularly important. A new kind of digital chip testing instrument is designed based on HT46RU24 as technical core. By using the test code to control and test the operation conditions of hardware, and then comparing the test result with the correct value, the result of right or wrong is automatically judged. In addition, the instrument with a network communication interface, not only can work offline, but also can be connected to a computer. It is proved that the instrument has small size, light weight, convenient handling and high reliability.