If you feel pain in your cheeks when chewing, it may be due to periodontal disease, temporomandibular joint disorder, etc. It is recommended to consult a doctor in time to find out the cause of the disease. 1. Periodontal diseases: Periodontal diseases such as wisdom tooth pericoronitis due to abnormal wisdom tooth eruption will cause pain in the cheeks when there is chewing action during the acute attack period. 2. Temporomandibular joint disorder: abnormal occlusal relationship between the upper and lower jaws, problems such as deep overlap, the main clinical manifestations of pain in chewing, as well as limited mouth opening, jaw joints have rattling, etc. In addition, there is a more common case of jaw pain. In addition, there is a more common situation, chewing some hard food or frequent eating, due to excessive force, will also appear cheek pain.