The basic immunization of Beijing Kexing Xin Guan vaccine is two doses, but a booster dose is required at the present time when the vaccination is completed at the age of 6 months. Beijing Kexing vaccine is a two-dose inactivated vaccine. In general, it is recommended that the two doses be administered at a time greater than or equal to 3 weeks, with the second dose to be completed as early as possible within 8 weeks. Adverse reactions such as fever, headache, nausea, etc. may occur after vaccination with Peking Koxing vaccine, and most of them will improve on their own within three days. Beijing Kexing Xin Guan vaccine booster shot helps to enhance the preventive effect, the level of neutralizing antibodies in the vaccinated person is rapidly and substantially increased, and the effectiveness of prevention is improved. After the implementation of the sequential booster immunization strategy, target populations who have completed the full course of inactivated vaccination can also choose the recombinant protein vaccine of Zhifeilongkoma or the adenovirus vector vaccine of Kangxinuo for sequential booster immunization. As adverse reactions may occur after vaccination with Beijing Coxin vaccine, it is recommended that the vaccine be administered under professional guidance to avoid adverse effects.