Pediatric teeth grinding has more factors, may be related to physiological factors, may also be due to pathological factors, common gastrointestinal dysfunction, malocclusion, etc., should be timely consultation. 1. Physiological factors: (1) over-excitement: for example, if a child is over-excited during the day, the cerebral cortex will continue to be in a state of excitement in the evening, and teeth grinding may occur. (2) Eating too much at night: If children eat too much and too full at night, resulting in a large amount of food accumulation in the body, it is easy to cause teeth grinding. 2. Pathological factors: (1) Gastrointestinal dysfunction: for example, the presence of intestinal parasites in the child’s organism, infected with roundworms, pinworms, etc., will produce some toxins or metabolic products, which will lead to teeth grinding at night during sleep. (2) Malocclusion: malocclusion of the child’s teeth can also lead to teeth grinding. Teeth grinding in children may also be related to other causes, and should be consulted in time, with the help of doctors to clarify the diagnosis and give comprehensive treatment.