The elimination of lymph nodes behind the ear should be based on the nature of the lymph nodes behind the ear, and different elimination methods should be adopted. If the lymph nodes behind the ear are inflammatory lymph node enlargement caused by local infection, such as chronic pharyngitis, acute tonsillitis, acute sinusitis, oral ulcer, etc., the primary infection should be actively controlled, and the lymph nodes can slowly subside after the inflammation is controlled. Secondly, the lymph nodes behind the ear are cancerous enlargement caused by the invasion of malignant tumor cells along the lymphatic vessels, such as nasopharyngeal carcinoma, lung malignant tumor, breast malignant tumor and so on. It is necessary to perform resection of primary lesion and lymph node dissection, and combine with necessary chemotherapy and radiotherapy after surgery to achieve better treatment effect.