In 2022, a booster shot of the new crown vaccine is necessary, but needs to be postponed if there are contraindications to vaccination. Relevant studies have shown that the protective effect of the vaccine decreases after a period of time (usually after 6 months) after vaccination with the new crown vaccine. A booster shot at this time can increase the antibody level by more than 10 times; and the level can be maintained at a relatively high level for another 6 months after vaccination. In addition, the booster vaccination not only increases antibodies, but also broadens the spectrum of antibodies, which means that it produces better protection against mutated strains. At present, booster vaccination is mostly available for people aged 18 years (relaxed to 12 years in some areas) and above who have completed two doses of inactivated vaccine or one dose of adenovirus carrier vaccine for six months, and who do not have any special health conditions. They should learn about the new coronavirus vaccination in advance, bring along a valid identity document, fully understand the “Informed Consent for New Coronavirus Vaccination”, truthfully inform their health conditions, cooperate in health inquiries and informed notification, and pass the doctor’s assessment and have their guardians sign an informed consent form before receiving the vaccination.