The child sleeps with his mouth open, corrective measures are as follows: 1, timely treatment of children’s rhinitis, tonsillitis, etc., to promote the respiratory tract to maintain smooth, and correct the bad habits of breathing through the mouth. 2, the period of milk teeth or permanent teeth replacement period, children can wear movable braces, raise the back teeth, depress the front teeth, so that the upper and lower teeth to form a normal coverage, overlap relationship, improve the protrusion. 3, permanent teeth completely replace the milk teeth After that, fixed or invisible braces can be worn to correct the transverse and longitudinal jaw curves, stimulate the alveolar bone to grow and change, the upper and lower lips can be completely closed, completely improve the convex mouth and form a straight face. 4, if the child’s anterior alveolar bone is excessively prominent, the hyperplastic bone can be ground away.