Abstract:[purpose] The innovation and development of medicine can not be separated from the support of information technology integration. The application of artificial intelligence technology in the field of medical health is increasingly widespread. Patent is one of the core embodiment of scientific and technological innovation. The purpose of this study is to compare and analyze the application patent of medical and health artificial intelligence technology at home and abroad, grasp the development trend and characteristics of its related industries, and provide reference for the practice and research of medical artificial intelligence. [Method] By means of ISS information retrieval and analysis platform, the patent information in the fields of medical health and artificial intelligence in DeWitt database was comprehensively analyzed, and the evolution of patents in related fields during 1963-2020 was combed, and the distribution of patent application countries and the focus of research hot spots and technical points were analyzed. [Result] The number of patents of global artificial intelligence technology in the field of medical and health has been increasing rapidly. Most of the hot areas are information and communication technologies which are used to dispose or process medical or health data. The research and development subjects are international medical devices and information technology companies as the core research and development teams. It is speculated that the market economy driving of medical industry is an important factor for patent growth At present, China's relevant enterprises are catching up with those of the United States, Japan and Europe in terms of the number of applications, with the strongest R & D vitality, while the role of scientific research practitioners and patent incentive policies is not significant.