Although most flat feet are due to genetic factors, and many people with flat feet have never been treated in their lives and have not affected their normal lives, this does not mean that parents can ignore the development of their children’s foot bones. Children, especially those who are just learning to walk, should wear shoes that are not too tight and that are soft to protect the normal development of the child’s foot bones. Flat feet can affect a child’s ability to bounce, run and other sports. Dr. Sun Lin, chief orthopedic surgeon of Beijing Children’s Hospital, pointed out that if flat feet are not treated for a long time, it may cause plantar fascia strain, fasciitis, bone spurs and other symptoms, and may also lead to knee pain and back pain. Professor Wen pointed out that babies are flat-footed before they learn to walk, and the vast majority of children will gradually form an arch as their bones develop, and by the age of six or seven, the arch is close to that of a normal adult. Recently, a Shanghai media reported that a survey showed that 60% of students in Shanghai have foot problems, and flat feet are the main condition. Experts say that although such a high incidence rate is not found in outpatient clinics, it is still important for parents to pay attention to protecting the development of their children’s foot bones.