According to World Health Organization surveillance data, the proportion of cases of neocoronavirus infection in children is gradually increasing, so there is a need to vaccinate children against neocoronavirus, and the vaccination is gradually being extended to children and adolescents. There are not too many differences between the New Coronavirus vaccination for children and adults. I. How to vaccinate children with the new crown vaccine: 1. Can they be vaccinated and is it safe: It has been confirmed that children aged 3-11 years old have good safety after receiving the new crown vaccine, and the antibody level is the same as that of adults, and the incidence of adverse reactions is not higher than that of people aged 18 years and above. Most of the adverse reactions after vaccination are transient mild and moderate fever and pain at the injection site; individual abnormal reactions may occur, mainly allergic reactions, such as allergic rash, which are relatively mild cases, so children can safely receive the new crown vaccine; 2. To vaccinate or not to vaccinate: In areas where the proportion of adults receiving the entire new crown vaccine is increasing, but children are not vaccinated, it is expected that the proportion of children in future cases The proportion will become larger and larger. In addition, schools and kindergartens are densely populated and prone to the local spread of infectious diseases, so it is necessary for children aged 3-11 years to receive the new crown vaccine to build an immune barrier for the whole population; 3. The interval between the two doses is recommended to be more than 3 weeks, and the second dose should be completed within 8 weeks after the first vaccination. The injection route is intramuscular and the best site is the lateral deltoid muscle of the upper arm. However, since children’s immune response to NIV differs from that of adults and the elderly, a third dose is not recommended for the time being to boost immunity in children. For children who need to complete two doses of the neo-coronavirus vaccination program, if they do not complete the vaccination program, it is recommended to complete the full course of vaccination as soon as possible with a catch-up vaccination. There is no need to restart the immunization program at the time of the catch-up vaccination; it is sufficient to complete the corresponding doses. It is recommended to complete the vaccination with the same vaccine product. In case of special circumstances, such as when the supply of New Crown vaccine cannot be continued or the recipient is vaccinated in a different place, the vaccine product of another manufacturer of the same type can be used to complete the vaccination. Although some studies have confirmed that mixing adenovirus vector vaccine and mRNA vaccine can achieve better immune responsiveness in adults, it is not recommended to use different types of New Crown vaccine for children for the time being. Contraindications to vaccination: 1. children who are allergic to the active ingredients of the vaccine, any of the inactive ingredients, or substances used in the production process, or children who have previously developed allergy to similar vaccines; 2. children who have previously experienced severe allergic reactions to vaccines, such as acute allergic reactions, angioneurotic edema, respiratory distress, etc.; 3. children with uncontrolled epilepsy and other severe neurological diseases, such as transverse Myelitis, Guillain-Barre syndrome, demyelinating diseases, etc.; 4. Children with fever, children with acute diseases, acute exacerbation of chronic diseases or serious chronic diseases that are not controlled; 5. Children who are not suitable for vaccination as assessed by the vaccination staff or vaccination instructions. Cautions: 1. Before vaccination: Children should be accompanied by their guardians or principals, do not have an empty stomach on the day of vaccination, it is recommended to wear loose clothing and bring the ID card or household register of the vaccinator; if children also need to receive vaccinations other than tetanus and rabies vaccine or tetanus and rabies immunoglobulin during this period, the vaccination interval should be kept at least 14 days; 2. During vaccination: Children’s guardians or The entrusted person should read and sign the informed consent form carefully, provide information such as health status and contraindications to vaccination truthfully, and cooperate with the vaccination personnel in registering information and informing the work well. In addition, personal protective measures such as wearing a mask and keeping a safe distance should be done throughout the vaccination process. 3. Keep the skin of the vaccination site clean and dry, and avoid scratching the vaccination site with your hands. If allergic reactions, persistent fever, local redness and swelling occur, you should seek medical attention and report to the vaccination unit. Where to get vaccinated: The choice of vaccination sites should be made in accordance with the principles of local management and proximity; for children aged 3-5 years, in principle, the designated vaccination sites should be arranged by childcare institutions in cooperation with the relevant epidemic prevention departments, and the relevant vaccination work should be carried out; for school children aged 6-11 years, the vaccination work can be done in schools in principle. In addition, a guardian or delegate can also bring the new crown vaccine with him/her to the vaccination site. In summary, although mutated New Coronavirus continues to appear, the existing New Coronavirus vaccine is still very effective in preventing mutated strains, and it is recommended that children of school age be vaccinated as early as possible. After receiving the vaccine, it is still necessary to observe all protective measures and do a good job of personal prevention and control by wearing masks, washing hands regularly, ventilating frequently, and gathering less.