The significance of wearable medical devices lies in directly wearing on the body，and recognizing the body characteristics and state，which has important application value. This paper summarizes the current situation and development trend of wearable medical devices in China in 2020 from the basic situation，development status and development trend of wearable medical device industry. Wearable medical devices are involved in health monitoring，disease treatment，remote rehabilitation and other fields，with a variety of products and broad prospects in the future. With the development of flexible electronic technology and body fluid sensing technology，wearable medical devices have developed in good market opportunities. The development trend of wearable medical devices is product aggregation，data cloud，experience interaction and diagnosis remote，innovative profit model. Although the development of wearable medical devices in China started late，there are many products that can be worn for a long time in the market. With the development of cloud computing and big data technology，combined with medical mobility，there is a good development prospect in the future.