The new crown vaccine for children is safe and is the result of extensive clinical trials and population-based vaccination practices. We have launched a large-scale vaccination of children with the new crown vaccine, which is required for children aged 3 to 11 years old. The components of the vaccine, which include inactivated neocoronavirus, recombinant protein and adenovirus vector, are relatively safe. As long as there are no contraindications to vaccination, it does not usually lead to serious adverse effects. In some areas, the vaccination of children has already been completed, and there have been no cases of fatal or other adverse effects of vaccination. Therefore, it is relatively safe for children to be vaccinated with the new crown vaccine, and all eligible children should be vaccinated as early as possible for their own protection.