Pain in the jaw bone and ear joint may be caused by temporomandibular joint disorder, soft tissue injury and other diseases. 1. Temporomandibular joint disorder: for example, the habit of chewing on one side, minor trauma, excessive mental stress and other factors can make the joint head, joint surface and the joint disk between them in the temporomandibular joint to have uncoordinated movement, which leads to temporomandibular joint disorder. This leads to symptoms of pain at the junction of the mandible and the ear. At the same time, it can be accompanied by popping and ringing and changes in the degree of opening. 2. Soft tissue injury: It is usually caused by trauma resulting in contusion of facial muscles (facial muscles, masticatory muscles, etc.), localized swelling and restriction of movement. The phenomenon of pain at the connection between the mandible and the ear will occur. When the jaw bone and ear joint pain symptoms, it is recommended to go to the hospital as soon as possible, after a clear diagnosis and treatment.