The following diseases are mainly considered clinically: 1. Inflammation of lymph nodes, such patients are accompanied by inflammatory diseases in the throat or other surrounding areas such as the neck, and the lymph nodes next to the throat are involved, resulting in lymph node inflammation. In this case, there is painful pressure on the lymph nodes, and ultrasound can see the inflammatory changes of the lymph nodes, which can be treated clinically with anti-inflammatory therapy; 2. Metastatic cancer in lymph nodes, some patients have hypopharyngeal cancer or subglottic laryngeal cancer, and the cancer metastasizes to the lymph nodes next to the throat, which can lead to cancer metastasis in lymph nodes, in this case, there is no pain and the primary focus can be found; 3. Metachronous cyst, this disease In general, it is soft and moves up and down with swallowing, and the liquid change can be seen by ultrasound; 4. Patients have lipoma in the neck, which may also exist, and the lipoma does not move up and down with swallowing.