Blisters on the feet may be eczema or foot fungal disease, you should go to the hospital to do a fungal test, is to scrape the skin flakes on the microscope to observe. If you can find mycelium, the fungal test is positive, you can diagnose the foot fungal disease, you can use topical antifungal drugs, such as clotrimazole ointment, terbinafine hydrochloride cream, if the fungal test is negative, consider the possibility of eczema, you can use topical hormonal creams, such as hydrocortisone butyrate cream, dinaide cream, etc. So blisters on the feet should go to the hospital as soon as possible, under the guidance of a clinician to give appropriate treatment.