Baby sleep grinding teeth may be nutritional imbalance, mental overstress, intestinal parasitic roundworms and other reasons, can be relieved by supplementing calcium and vitamins, eliminating stressful factors, taking broad-spectrum anthelmintic drugs and so on. 1. Nutritional imbalance: because the baby picky eaters, resulting in a lack of calcium and a variety of vitamins, resulting in nutritional imbalance, causing involuntary contraction of the facial chewing muscles in the evening, thus appearing in the phenomenon of grinding teeth in bed. Can be under the guidance of the doctor to supplement the appropriate amount of calcium and vitamins to ease, such as calcium gluconate oral solution, oral vitamin AD and so on. 2. Excessive mental tension: for example, watching horror movies before going to bed, playing too much, suffering from parental criticism, is prone to mental tension, uneasiness, anxiety, etc., which will lead to excessive cerebral cortex excitation and inhibition imbalance, inducing masticatory muscle movement, and then the phenomenon of teeth grinding in bed will occur. It can be relieved by eliminating stressful factors, avoiding over-excitement, watching less TV before going to bed, and relaxing appropriately. 3. Intestinal parasites: Ascaris lumbricoides appears in the intestines, and the toxins of ascaris lumbricoides will stimulate the nerves, which will lead to excitation of the nerves and then cause babies to grind their teeth in their sleep. Can follow the doctor’s advice to use albendazole and other drugs for treatment. The phenomenon of baby sleep grinding teeth should be taken seriously, if long-term persistent teeth grinding or symptoms worsen, should go to the hospital in time, with the doctor active treatment.