The pain in the cheek and the middle of the ear when biting teeth may be temporomandibular joint disorder, condylar fracture, joint displacement and other possibilities, which need to be combined with cushion, surgery and other symptomatic treatment. 1. Temporomandibular joint disorder: joint disorder can lead to inflammation around the joint or change the joint space, increasing pressure and symptoms of pain when biting teeth. It is recommended to do the conservative treatment such as the first cushion, repair missing teeth, etc. If the effect is not good, then according to the condition to be orthodontics, joint surgery and other treatments. 2. Condylar fracture: Usually there is a history of trauma, high level fracture usually requires surgery, low level causes facial changes or occlusal disorders, surgical treatment is required. 3. Joint displacement: cysts and tumors in the joint area are rare and require MRI for clear diagnosis and surgical resection. It is recommended to go to the stomatology department of regular hospitals for examination and diagnosis by physicians and symptomatic treatment.