Boils in the external auditory canal mostly occur due to bad habits such as water in the ear, or digging in the ear. If the boil is diagnosed and medication is administered in a timely manner, recovery from the boil usually takes 10-15 days, but if the boil is poorly controlled and leads to cellulitis or even the formation of a carbuncle, treatment can be very troublesome. If there is purulent discharge, incision and drainage are required. Daily oral cephalosporin anti-inflammatory drugs, such as cefradine capsules or cefuroxime sodium tablets, are required. No water should be allowed in the ear, and the diet should be light, with no smoking or drinking, and no spicy or irritating foods. If inflammation is formed and has led to chondromalacia, treatment at this time is mainly based on cephalosporin anti-inflammatory drugs, and cefuroxime sodium can also be used. If the inflammation can be controlled, usually in about 20 days, serious may be 1 month to get well.