Novel coronavirus pneumonia outbreak in the early days, China's researchers have been the development of vaccine research as one of the main directions* vaccines, and three vaccines have entered clinical trials* inactivated vaccine developed by China biological Wuhan biological products research institute and Chinese Academy of Sciences in Wuhan in April 12th was successfully launched in the first phase of phase I clinical trial in Henan on the same day, and 32 volunteers were enrolled. According to the introduction, this is based on the mature technology of inactivated vaccine established by Sinopharm group, combined with the experience of researchers in etiology, animal model and other aspects, and focused on organizing research.