Teeth always bite into the cheek flesh may be the occlusal relationship is not good, restorative system operation, bad habits, mental factors and so on. 1. Poor occlusal relationship: poor occlusal relationship of teeth, including poor position of wisdom teeth and small coverage of back teeth. When teeth are missing for a long period of time, the mucous membrane in the mouth will sink inward without the support of teeth, which may cause the teeth to bite the flesh of the cheeks all the time. 2. Restorative system: too little coverage in the restoration may also cause the teeth to bite into the cheeks all the time. 3. Bad habits: bad oral habits such as chewing on one side of the mouth or grinding teeth may also cause the teeth to bite into the cheeks all the time. 4. Mental factors: tension, anxiety, life stress, etc., it is easy to produce habitual bite cheeks and other actions to relieve. Teeth always bite the cheek meat may also have other pathological factors, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.