Corrective methods for children sleeping with their mouths open can be caused by physiological factors, allergic rhinitis and other diseases. Specifically divided into several aspects of exercise, insertion training, medication and so on. 1. Exercise: to correct children sleeping with their mouths open, it is recommended that children accompanied by their parents to carry out appropriate aerobic exercises such as walking, walking, jogging and other aerobic exercises to practice breathing with their mouths closed, then the children will consciously breathe with their mouths closed, and gradually let the children get into the habit of correcting the children’s open-mouth breathing. 2. Interpolation training: correct children’s open mouth sleep interpolation training, mainly to train children’s upper and lower lips and cheek muscles, accompanied by parents, let children’s upper and lower lips clamped clean pieces of cardboard, clamped and then open, 3-4 times a day, may be effective in correcting the children’s open-mouthed breathing. 3. medication: children sleeping with their mouths open may be caused by allergic rhinitis or nasal congestion due to colds, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to take medication, such as Rettadine oral solution, cetirizine syrup and so on. If the child has the habit of sleeping with his mouth open, it is recommended to go to the hospital in time to find out the cause of the disease, under the guidance of the doctor to treat the symptoms, it is recommended to correct the problem in time to avoid affecting the child’s growth and development. All of the above medications should be used under the guidance of a doctor.