The side of the ear always rotten, may be the external ear canal eczema, auricular suppurative chondritis, skin squamous cell carcinoma and other diseases caused, should be treated with medication or surgical treatment. 1. Eczema of external auditory canal: remove the allergens, and avoid washing with soap or hot water locally. For those with more exudate, boric acid solution or zinc oxide solution can be used as wet compress. Those with less exudate can be coated with methyl violet liquid, glucocorticoid ointment. 2. Auricular suppurative chondritis: follow the doctor’s instructions for the application of antibiotics anti-infection treatment, the effect of the drug is not good or more serious local, accompanied by abscess formation, feasible surgical removal of pus, necrotic cartilage, etc., the use of sterilized physiological saline repeated rinsing of the surgical cavity after the use of sterile gauze bandage. 3. Squamous cell carcinoma of skin: early surgical resection is recommended, and postoperative adjuvant radiotherapy can improve the prognosis according to the condition. It is suggested that patients should consult doctor in time, and after clarifying the cause of the disease, treat the cause of the disease, and the above medicines should be used according to the doctor’s prescription.