The baby has the symptom of grinding teeth, it is recommended that parents should pay attention to find the cause of grinding teeth, the right treatment, the main reasons for grinding teeth are intestinal parasitic disease, excessive mental tension, digestive disorders, nutritional imbalance. 1, intestinal parasitic disease: due to the baby’s young age, it is easy to not pay attention to hygiene in the process of eating and drinking, producing roundworms in the stomach, however, the toxins produced by roundworms will stimulate the baby’s nerves, so that the nerves are excited, resulting in the phenomenon of the baby grinding his teeth. 2, excessive mental tension: if the baby is frightened during the day, excessive play, excessive mental tension, causing anxiety, depression, restlessness, the baby is easy to sleep at night with the symptoms of grinding teeth. 3, digestive disorders: baby eat too much food at night, easily lead to the accumulation of food in the intestinal tract, the gastrointestinal tract is overburdened, in sleep will appear involuntarily grinding teeth. 4, nutritional imbalance: baby picky eating can easily lead to a lack of calcium, magnesium, iron and other trace elements, thus causing involuntary contraction of the facial chewing muscle, it formed the symptoms of teeth grinding. Usually the condition of the baby grinding teeth at night is due to the above-mentioned reasons. Parents are advised to get rid of the worms in the baby’s stomach as soon as possible, and at the same time create a harmonious family environment for the baby to develop a non-picky eating habit.