Itchy blisters on the feet may be caused by eczema, athlete’s foot and other causes, commonly used ointments are mometasone furoate ointment, terbinafine hydrochloride gel and so on. 1. Eczema: If the blisters are caused by eczema, you can use boric acid zinc oxide ice ointment as prescribed by the doctor, and when the blisters or oozing subsides, you can use mometasone furoate ointment, tretinoin ointment, and so on, to carry out the treatment. 2. Tinea pedis: If the blisters are caused by tinea pedis, you can follow the doctor’s instructions to use antifungal ointment to carry on the treatment, such as terbinafine hydrochloride gel, miconazole nitrate cream and so on. Different causes of blisters should be treated with different ointments, avoiding blind use of drugs, so as not to aggravate the symptoms or cause other skin discomfort.