A booster shot of the new coronavirus vaccine is another shot six months after completing the full course of vaccination for the purpose of booster immunization, and people who have never been vaccinated can only start from the first shot. Currently, there are three types of neocoronavirus vaccines available for mass vaccination in China: inactivated neocoronavirus vaccine (Vero cells), adenovirus vector vaccine (adenovirus vector type 5), and recombinant neocoronavirus vaccine (CHO cells). Among them, the inactivated neocoronavirus vaccine is a two-dose vaccine, and people aged 18 years and above who have completed the full vaccination for 6 months can receive a booster dose of neocoronavirus vaccine. The adenovirus vector vaccine is a one-dose vaccine, and people 18 years of age and older who have received one dose of the vaccine for 6 months can receive a booster dose of the new coronavirus vaccine. Recombinant New Coronavirus Vaccine is a three-dose vaccine, only need to complete the three-dose vaccination as required, and do not need to receive booster shots for the time being.