The following diseases are mainly considered: 1. Mumps, which is common in children and adolescents. It is recommended to have an ultrasound of the parotid gland and a blood test for amylase to make a comprehensive diagnosis. The patient’s ear canal is inflamed, causing pain in the lymph nodes around the ear, and the examination reveals redness and swelling in the external ear canal, and the ultrasound reveals inflammatory changes in the lymph nodes around the ear. Painful sensation. During examination, it is usually found that there are no inflammatory changes around the ears as well as in the ears, but the patient may have a relatively heavy inflammatory infection in the oropharynx and throat, commonly associated with peri-tonsillitis, peri-tonsillar abscess, acute purulent tonsillitis and other related diseases, which require anti-inflammatory, infusion and other treatments. If there is abscess formation, incision and drainage are required.