Itchy small blisters on the child’s feet may be caused by tinea pedis, sweat herpes and other reasons. 1. tinea pedis: children who have in tinea pedis patients infected public bathrooms, swimming pools and other public areas barefoot walking, or mistakenly wear tinea pedis patients shoes and socks, etc., may be induced tinea pedis, manifested in the local skin blisters, vesicles, keratinization, fissures, peeling and other symptoms, accompanied by intense itching symptoms. 2. Sweat herpes: the cause of sweat herpes is still unclear, may be related to local allergies, dermatophyte infections, mental factors, ultraviolet radiation and other factors, mainly manifested in the hands or feet skin blisters symmetrically distributed, accompanied by intense itching, tingling or burning sensation. Children’s feet itchy blisters may also have other causes, it is recommended to go to the hospital in a timely manner to improve the examination, clear cause to give targeted treatment.