Children’s feet are swollen and hard and itchy, may be mosquito bites, may be an allergic reaction, or due to fungal infections. 1. mosquito bites: mosquito saliva contains chemicals that can make the blood flow aggregation, in the location of mosquito bites, the body appears to be a stressful situation, if the child’s body is more sensitive, there may be swollen feet, hard and itchy. 2. Allergic reaction: some children’s physique is more special, prone to allergic reaction, once contact with allergens, may appear feet swollen, hard and itchy situation. 3. Fungal infection: some children have lower resistance, if they do not pay attention to foot hygiene, they may be infected with fungi and develop inflammation. Inflammatory organisms and fungal secretions increase, which may lead to swollen, hard and itchy feet in kids. Children’s feet are swollen, hard and itchy, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.