At this time, most children do not need a booster shot of the New Crown vaccine for the time being. The New Crown vaccine booster shot is for adults who have had basic immunization against the vaccine for 6 months and are 18 years of age or older (12 years of age or older in some areas). After vaccination, the level of antibodies in the body may gradually decline until the antibody titer is so low that it cannot effectively prevent infection with the new coronavirus. Therefore, experts recommend that a booster shot be given 6 months after the basic immunization with the new coronavirus vaccine. At present, the booster shot of the new crown vaccine is mainly administered to adults aged 18 years and above, and children do not need to receive the booster shot of the new crown vaccine for the time being. Children are not required to receive the booster vaccine for the time being. Children are not the first group of people to receive the booster vaccine because they are less physically able to withstand the vaccine than adults. With the commencement of the Phase IV clinical trial of the booster vaccine and the observation of the effect after vaccination, booster vaccination has been carried out in some regions for people aged 12 to 18 years, and it is likely that booster vaccination will be carried out comprehensively for children in the future.