Enlarged ears may be caused by trauma, pseudocyst of the auricle, purulent chondritis of the auricle and so on, and can be treated with medication or surgery according to the specific disease. 1. Trauma: If a sharp object pierces the skin of the external ear canal during ear pulling, it can lead to redness and swelling of the ear canal, and if the localized infection is combined, it may cause swelling of the ear. Treatment measures: avoid local water, prevent infection, use antibiotics to fight infection. 2. Pseudocyst of the auricle: it can be treated by local compression after puncture and fluid extraction, or by sclerotherapy. If the disease is more serious, surgery can be considered, and auricular pseudocyst uncovering surgery can be performed to achieve the therapeutic purpose. 3. Auricular suppurative chondritis: It needs to be treated with sensitive antibiotics. If the condition is serious or there is abscess formation, surgery is needed to remove the pus and necrotic cartilage, etc., together with wound dressing treatment. It is recommended that the patient consult a doctor in time to check the cause of the disease, and actively cooperate with the doctor to treat the disease.