The flu vaccine is recommended for 10 year olds to reduce the incidence of influenza. The influenza vaccine is made by inoculating the influenza virus into chicken embryos, and the influenza vaccine is effective in preventing infection with this subtype of influenza virus. Influenza viruses are usually spread through respiratory droplets. 10-year-olds are at school age and their daily life and learning places are crowded, which increases the risk of contracting respiratory diseases. It is recommended that 10 year olds receive the influenza vaccine before the annual influenza season, as the vaccination can prevent infection by the prevailing strain of the year and reduce the incidence of influenza. In addition, 10-year-olds should pay more attention to exercise, pay attention to warmth, and enhance physical fitness to prevent influenza.