With the rapid development of Internet technology and the improvement of medical conditions，the medical device industry has also entered the era of big data. This paper starts with the definition of big data and expounds the wide application of big data in medical machinery industry. Then，according to the current situation of data-based development of medical devices in China，find out the shortcomings. And introduced the background and progress of data research in the medical device industry，data research ideas，specific research contents and analysis methods；combined with the social situation，discuss the future trend of the digital development of China’s medical device industry. Finally，on the basis of the full text，some Suggestions on the digital development of medical devices in China are given.