5 years old children can be vaccinated with chickenpox vaccine. Chickenpox vaccine belongs to Class II vaccine, unlike Class I vaccine, which is mandatory by the state, so parents can help their children to be vaccinated voluntarily and at their own expense. Chickenpox vaccine is a vaccine used to prevent chickenpox, which can stimulate the body to produce anti-chickenpox virus immunity, belongs to the second category of vaccines, it is not required to be vaccinated, and parents can decide whether or not to vaccinate according to their children’s immunity and physical fitness. For 5-year-old children who have not yet received the varicella vaccine, they need to receive two doses of varicella vaccine, with a three-month interval in between; for children who have already received two doses of varicella vaccine between the age of 1 and 1.5 years and at the time of the baby’s fourth birthday, 5-year-old babies don’t need to be vaccinated again because the protective power of the varicella vaccine lasts for 7 to 10 years. For 5-year-olds who need varicella vaccination, please consult your local vaccination center and get vaccinated.