When the baby is grounded, the following treatment measures can be taken respectively: 1, correct feeding: correct the poor way of feeding the child lying down and avoid the baby to sleep with a bottle for a long time. 2, bite pry method: after the baby just erupted the upper and lower milk front teeth, you can apply chopsticks or pencil head for bite pry method to depress the lower jaw front teeth and lift the grounded. 3, wear movable orthodontic appliance: after all the milk teeth erupted, 2-3 years old children can wear movable The orthodontic appliance opens the palatal suture, expands the width and length of the upper jaw, pushes the upper front teeth to move labially, inhibits the lower jaw from extending forward, and forms a shallow covering, shallow overbite relationship. 4, pay attention to diet: during the replacement of permanent teeth, to help the upper front teeth erupt smoothly, avoiding the formation of an envelope with the lower front teeth, allowing children to chew more tough food, stimulating the full development of the upper jaw, to avoid the formation of concave facial shape.