The inquiry diagnosis and treatment of medical personnel live broadcast of popular medical knowledge is different from the Internet diagnosis and treatment,remote diagnosis and treatment.At present,there is no law in China clearly specifies that the behaviors of live commerce of medical personnel.There is no discussion on the le-gal regulations of the behaviors of inquiry diagnosis and treatment while the medical personnel live broadcast of pop-ular medical knowledge.Nine ministries and commissions,including the National Health Commission,jointly issued the"Key Points for Correcting unhealthy Habits in the field of Medicine Purchasing and Marketing and medical Services in 2022"(hereinafter referred to as the"Key Points"),which put forward"The medical personnel who take advantage of their positions and identities to live commerce will be seriously investigated and punished."This is the alarm for medical personnel to live commerce.Taking three typical cases as examples,this paper analyzed the live commerce behavior of medical personnel from the aspects of concept,type,characteristics and nature,and discussed the legal regulation of the specific behavior.