Blisters on the feet and itchy, common causes are as follows: 1, foot fungus: the most common, can occur in one foot, but also first appear in one foot, and later infected to the other foot. To determine whether there is a fungal infection, you can go to the hospital to find a dermatologist to do laboratory tests, scrape a little skin on the foot and put it under the microscope, if there are mycelium and spores, it is determined to be a fungal infection. Fungal infection of the foot is very good treatment, coated with antifungal effect of the cream or salve, 1 day 2 times, coated 4 weeks, that is, antifungal standard treatment. If only coated for a few days, itching reduced, blister reduction without medication, may not achieve a complete cure; 2, foot eczema: caused by allergies, in addition to anti-allergy drugs, but also pay attention to avoid hair products, such as beef and mutton, fish and shrimp and other seafood, spicy food, wine, to be used in conjunction with ointments, it is easy to cure.