There is currently no third booster shot for minors, and the need for subsequent vaccinations is subject to official notification. Previously, China has carried out widespread vaccination of minors with the first two shots of the new crown vaccine, which is required for ages 3 years and older, and is generally inactivated. According to the progress of vaccination in most areas, the time has not yet reached the need for widespread booster vaccination. The inactivated New Crown vaccine has a protection period of 6 months, after which the protective effect begins to gradually decline. Therefore, there is currently no third dose of New Crown vaccine for minors aged 3 to 18 years. However, dynamic adjustments are needed based on reasons such as recurrence of the outbreak, and a booster shot may be needed if subsequent recurrences keep occurring. Whether or not it is needed is subject to official notification, and it is sufficient to meet the conditions for vaccination in a timely manner.