Teeth grinding in sleep may be caused by a variety of reasons, the common ones being psychosomatic factors, dental occlusion factors, and systemic disease factors. In the case of occupations that require high precision and mental concentration, such as watchmakers and programmers, there is a tendency for teeth grinding to occur in sleep. There is usually no cure for teeth grinding, and treatment is generally aimed at protecting the teeth, reducing the damage to the teeth from grinding, and improving the patient’s sleep quality. The common causes of teeth grinding are different, and the treatment is not exactly the same: 1. Psychosomatic factors: emotional tension, anxiety, anger, etc. are the main causes of the onset of grinding teeth in bed. People suffering from mental illness usually have the phenomenon of grinding teeth, and for children, long-term chewing toys may also lead to grinding teeth. It is recommended that families care more about patients who grind their teeth, eliminate tension, change the sleep environment, if necessary, oral estradiol tablets and other drugs to improve the symptoms of grinding teeth in bed; 2, dental occlusion factors: dental occlusion problems are usually the cause of grinding teeth, mostly caused by improper dental occlusion, lateral dental occlusion by interference. The use of dental pads or adjust the grinding bite and other ways to improve the teeth bite, while the application of muscle relaxation instrument, the use of muscle relaxants and other drugs to relieve the tension of the chewing muscles, can also relieve the symptoms of teeth grinding; 3, systemic disease factors: children’s nutritional deficiencies, endocrine disorders or parasite-induced gastrointestinal disorders, hyperthyroidism and other factors, usually also have a certain relationship with teeth grinding disease. Treatment of the primary disease can be used to help alleviate the symptoms of sleep teeth grinding, such as intestinal deworming treatment, iodine-131 treatment of hyperthyroidism, etc.; 4, other: for children with childhood sleep teeth grinding, usually related to genetic factors, attention should be paid to relaxation before bedtime, and there is no effective solution.