It is generally not recommended that newborns sleep on their stomachs. Newborns sleeping on their backs for long periods of time has a greater impact on their health, and when they feel uncomfortable, they cannot turn over on their own. If they sleep on their backs for a long period of time, they are likely to compress various organs and tissues, including the heart, liver, and kidneys. Newborns sleeping on their backs for a long time will also affect the normal breathing, oxygen can not be supplied normally, but also increase the risk of asphyxia. The gastrointestinal function of the newborn is not fully developed, if you choose to sleep on your stomach, it is likely to cause spitting up, the quality of sleep will also be affected. Whether the newborn sleeps during the day or at night, try to choose the left side of the lying position, which is conducive to milk spitting out, to prevent choking or suffocation. Usually can also occasionally lie down to sleep, conducive to limb stretching, but parents must do a good job of supervision. Newborns often cry at night, sleep abnormalities, should seek medical attention to identify the causes, to avoid the development of the disease.