Open mouth right side of the face ear pain is mostly due to temporomandibular joint disorder syndrome, need to actively seek medical treatment. 1. Temporomandibular joint disorder syndrome is a group of diseases whose etiology is not yet completely clear and which have common pathogenetic factors and clinical symptoms. 2. The main symptoms of temporomandibular joint disorder syndrome include pain when opening and closing the mouth, or joint popping; difficulty in opening the mouth; frequent attacks of headache or neck pain; pain in the temporomandibular joint area; “locking” of the joints; muscle pain and tenderness, limitation of jaw movement, and sometimes the pain extends to half of the face. As a result, patients with TMJ disorder often experience pain on the right side of the face and ear when opening the mouth. TMJ syndrome caused by the right side of the face and ear pain need to actively seek medical treatment, the main treatment methods include local hot compresses, physical therapy, taking celecoxib and other non-steroidal anti-inflammatory drugs, if necessary, need arthroscopic surgery, arthrocentesis and other surgical treatments, the specific medication should be taken under the guidance of a doctor.