Infants can usually lie on their backs after four months, and should be bathed regularly to keep their skin clean, and should be kept in the supine position for sleeping. Infants before four months, can not turn over well, more likely to cause the newborn baby suffocation phenomenon. Can be practiced after four months lying down, but can not sleep on their stomachs, should take the supine position to sleep, is conducive to the healthy development of the body. Newborns should wear cotton loose clothing, regular bathing to keep the skin clean. In different seasons should pay attention to adjust the temperature, increase or decrease the clothing. At the same time, you should pick them up and burp them after feeding to avoid spitting up and overflow. It is recommended to take proper care of newborns under the guidance of a doctor to avoid adverse phenomena.