Children with itchy blisters on their feet are considered to be due to herpes sweat, eczema, tinea pedis and other factors, which can be relieved by topical medications, oral medications and other methods. 1. Sweat herpes: a blistering disease that occurs symmetrically on the hands or feet, also known as dyshidrotic eczema, after diagnosis, you can choose to use topical tretinoin cream to control local symptoms. 2. Eczema: a chronic inflammatory disease, the acute phase will appear pimples, papules, blisters and other phenomena, after diagnosis can be used glycerine lotion coating, but also can use hydrocortisone, dexamethasone cream treatment. 3. Tinea pedis: mainly due to dermatophytes caused by fungal infections of the foot skin, often occurring on the soles of the feet and the skin between the toes, manifested as blisters, flaking, fissures, accompanied by obvious itching, after diagnosis, can be given to ketoconazole, econazole, terbinafine and other drugs treatment. All of the above medications should be used under the guidance of a doctor, avoid self-medication to prevent adverse reactions.