Baby biting is mostly seen in the eruption of milk teeth, due to the gums are not comfortable, will lead to baby biting, drooling phenomenon, this kind of situation can be given to the baby to use gum to ease the discomfort. If you exclude this kind of situation, the baby biting teeth may also be the influence of mental factors, lack of calcium, oral diseases, intestinal roundworm disease and other problems caused by. 1, the influence of mental factors: mental overstress, emotional fluctuations is relatively large, the baby will also appear biting teeth. Parents can appease the baby, and when the baby’s emotions are stable after the performance can be relieved; 2, lack of calcium: the lack of vitamin D in the baby’s body will affect the absorption of calcium, lack of calcium will make the nerve excitability increased, resulting in baby teeth, usually accompanied by pillow baldness, sleep is not solid, love to cry and other symptoms. Can be supplemented under the guidance of the doctor vitamin D, calcium gluconate, and take the baby more sunshine, in order to promote calcium absorption, and gradually improve the phenomenon of clenching teeth; 3, oral diseases: such as inflammation of the gums lead to swollen and painful gums, the baby may be through the clenching of the teeth to ease the discomfort. In general, mild inflammation of the gums do not need to take drugs, pay attention to keep their oral hygiene can be, but if the inflammation is heavy, or even the formation of abscesses, it is recommended that the application of cephalosporins under the guidance of a doctor for intravenous drip; 4, intestinal ascariasis: if the intestinal infection of roundworms, in the night time when the baby sleeps will be clenching the teeth, usually accompanied by abdominal pain, diarrhea, emaciation and other symptoms. Can follow the doctor’s advice to the baby to use anthelmintic drugs, such as albendazole, usually diet should pay attention to hygiene, wash your hands before and after meals; 5, epilepsy: baby if suffering from epilepsy, in the seizure of the disease will appear convulsions, teeth clenching, can be used under the guidance of the doctor antiepileptic drugs, such as carbamazepine, phenobarbital tablets, etc.; 6, dyspepsia: due to insufficient gastric power, lack of secretion of digestive juices, the stomach accumulates food is more, the occurrence of Dyspepsia, the phenomenon of baby’s teeth clenching may occur at night when sleeping, usually accompanied by abdominal distension, decreased appetite, bad breath and other symptoms. Medications such as Si Mu Tang Oral Liquid, Gastric Enhancement and Elimination Tablets and Bifidobacterium bifidum can be given as prescribed by the doctor to promote gastric emptying and improve digestion and absorption, which can improve the symptom of baby’s teeth clenching.