The possible causes of itchy blisters on the soles of children’s feet include tinea pedis and eczema. 1. Tinea pedis: associated with fungal infections, this disease is mainly caused by infections of Trichophyton rubrum, Trichophyton mustelii, Gypsum-like microsporidium and flocculent epidermidis, which will appear long blisters, itching and other symptoms. You can use antifungal medication, including terbinafine cream, ketoconazole cream and so on. 2. Eczema: related to a variety of internal and external factors, such as infection, endocrine, local irritation or allergy, etc., will appear foot pimples, blisters, itching and other symptoms, can be used topical glucocorticoid such as hydrocortisone, dexamethasone cream, etc. for treatment. If the child foot blisters long itching phenomenon is serious, should go to the hospital in a timely manner, clear reasons for treatment, the use of the above drugs should be in accordance with the doctor’s instructions.