Grinding teeth at night may be caused by mental stress, occlusal disorders and genetic factors, which can be relieved by reducing stress, adjusting occlusal relationships, wearing soft jaw cushions, etc. 1, stress reduction: grinding teeth at night is mostly related to psychological factors, patients should pay attention to relaxing and adjusting the state of mind. Especially before going to sleep, you can properly soak in a hot bath, listen to soft music, to ensure that the sleeping environment is quiet and comfortable. Usually try to avoid food containing caffeine, such as coffee, chocolate, etc., and eat more food containing vitamins and calcium, such as milk and fresh fruits. Stress can also be reduced through reasonable exercise, such as practicing yoga. Before going to bed, you can massage and relax the bite muscles to reduce the occurrence of teeth grinding; 2, adjust the occlusal relationship: because of the occlusal relationship disorders caused by teeth grinding patients, you can go to the stomatology department to do the occlusal relationship of the relevant examination, adjusting some of the dental tissues, eliminating the occlusal interference, coordinating the teeth, joints and muscle relations, orthodontics, if necessary, so that the occlusal relationship is balanced; 3, wear a soft jaw cushion: soft jaw cushion is a soft plastic pad made of a certain degree of elasticity and thickness of the teeth. The soft jaw pad is made of soft plastic with certain elasticity and thickness, and it can be worn to sleep at night to avoid direct contact between upper and lower teeth, buffer and isolate the collision of upper and lower teeth. However, this method can only reduce the harm caused by grinding teeth, can not completely solve the problem of grinding teeth; 4, other: grinding teeth at night may be related to parasitic diseases, diagnosed with parasitic infections can take anthelmintic medicine for treatment; calcium deficiency caused by grinding teeth patients, can be used to supplement vitamin D and calcium to improve the way. In addition, acupuncture can be used to reduce muscle tension and improve nighttime teeth grinding symptoms.