Usually, babies sleeping on their stomachs do not need to be corrected, but if the baby is younger, it is best to correct. If the baby is younger, the muscles are not yet fully developed, sleeping on the stomach is easy to block the nose, if you can’t lift the pressure in time, resulting in severe respiratory distress, may suffocate and die. In addition, if suffering from pneumonia and other respiratory infections, colds and phlegm, or allergic asthma caused by respiratory obstruction, cerebral palsy, congenital heart disease, is not recommended to sleep on the stomach. If the baby has learned to roll over, sleep, may be self-adjusting sleeping position, generally do not need to correct the sleeping on the stomach. In addition to sleep on the stomach, can give the baby a sense of security to the surrounding environment, relieve gastrointestinal discomfort, conducive to fine finger movement, neck, chest, waist and other parts of the muscle development, to promote the turn over, standing, walking and so on. If the baby is used to sleep on his back, parents should pay attention to the side of the supervision, if the duration is too long, should be appropriate to change the sleeping position, to observe whether there is respiratory obstruction, to avoid suffocation.