The first and second doses of the new crown vaccine for minors generally need to be administered 21-56 days apart. Based on the results of Phase I/II clinical trials, the vaccine can be used in people aged 3-17 years, and the dose and dosage generally do not differ from the adult vaccination profile. Studies have shown that after vaccination, minors have a high rate of positive antibody conversion and are similar to adults in terms of safety, with no additional adverse effects compared to adults. If the interval is too short, the effect of the first dose of vaccine may not be fully absorbed or effective, and the second dose may affect the effect of vaccination or increase the incidence of adverse reactions; if the interval is too long, the amount of antibodies produced in the body after vaccination may be reduced. However, even after 56 days, the second vaccination can be continued without the need for revaccination. Since people are generally susceptible to the new coronavirus, it is important for minors to be vaccinated in a timely manner, and if there are no contraindications to vaccination, they should be vaccinated in accordance with the regulations. Currently, inactivated neo-coronavirus vaccine is approved for emergency vaccination of people aged 3-17 years. The priority of vaccination for minors is generally determined by the epidemiological situation in each region. Minors are vaccinated in the same manner as adults. An interval of at least 14 days between vaccination and other vaccinations is recommended to avoid compromising the effectiveness of immunization or inducing adverse reactions. If it is necessary to receive tetanus or rabies vaccine in case of stabbing by a sharp object or bite by a dog or cat after receiving the new crown vaccine, the time interval may be disregarded and the vaccination should be given as early as possible.