Jaw pain, pain near the root of the ear when opening the mouth, may be temporomandibular joint disorder, wisdom teeth pericoronitis, should be treated with drugs or surgery. 1. Temporomandibular joint disorder. Temporomandibular joint is located in front of the ear screen, and when it is disordered, there may be pain when opening and closing the mouth, joint popping, limitation of opening the mouth, according to the situation, we can wear occlusal cushion, local physiotherapy or local injection of hyaluronic acid, etc. If it is serious, consider surgical treatment. 2. Wisdom tooth pericoronitis. When the acute attack of pericoronitis of mandibular wisdom teeth, the surrounding tissues are red and swollen, and there will be pain when opening and closing the mouth, usually use drugs to rinse the wisdom teeth locally, surrounding iodine povidone, and consider removing the wisdom teeth after the inflammation is eliminated. Jaw pain and pain in the open mouth is recommended to the hospital in a timely manner to avoid aggravation of symptoms affecting chewing.