The lower part of the earlobe usually corresponds to the parotid gland, the mandibular joint, the ascending branch of the mandible, and the mandibular lymph nodes. If there is a significant deformity of the lower part of the earlobe, or if there is a restriction in opening the mouth or biting, it is important to consider whether there is a dislocation of the mandibular joint or a fracture of the mandible. In addition, if there is swelling, pain or elevation of the cheeks below the earlobes, the first consideration is whether there is acute pancreatitis and parotid gland swelling, like the most common parotid mixed tumor, parotid cancer, for acute parotitis is usually caused by viral infections, the treatment is mainly antiviral therapy, and if it is a parotid gland mass, clinically, usually need surgical treatment. There is also inflammation of the throat secondary to mandibular lymphadenitis, which is mainly treated with anti-inflammatory therapy.