There is no fixed pattern of sleeping position for newborns. For the safety and good development of newborns, it is best to use several sleeping positions in rotation. 1, supine position when the newborn baby breathing smoothly, but if the baby prone to vomiting this sleeping position is not safe, because the baby vomiting supine easy to block the mouth and nose, or accidentally attract up asphyxiation. Long-term supine sleep is also easy to cause the back of the baby’s head flat. 2, side sleep, especially when the baby is lying on the right side, the stomach contents can enter the intestines smoothly, not easy to cause vomiting, and if vomiting milk will flow out along the corners of the mouth, will not block the mouth and nose caused by asphyxiation, so the baby side sleep is safer. But because the baby’s skull has not developed well, plasticity is high, long time fixed side is easy to sleep on the side of the head, it is recommended that the best supine, left and right side lying exchange. 3, because the baby’s spine is not curved, is straight, so the baby sleep without pillows, baby’s head and shoulder width ratio is similar, so the side lying pillow is not necessary, baby gradually developed to 3 months later, you can pad 3 to 4cm high small pillow. Most of the newborn baby’s time is spent in sleep, so it is important to take a reasonable sleeping position for the development of newborns. Parents should observe carefully when the baby is sleeping and pay attention to the baby’s safety.