The normal range of axillary temperature of newborns is 36-37 ℃, but newborns due to the thermoregulatory center function is not yet complete, the subcutaneous fat layer is thin, the body surface area is relatively large and other factors, the body temperature is affected by the surrounding environmental factors. If the surrounding environment is too high, the newborn water intake is low, insufficient heat dissipation so that the body temperature rises easy to dehydration fever, if the child is just born, the gap between the intrauterine temperature and indoor temperature is large, warmth is not timely will appear hypothermia, hypoxemia, hypoglycemia, cold injury syndrome, and so on. So we should closely monitor the newborn’s body temperature, if high to be timely physical cooling, such as open bag cooling, cold water bag under the shoulder pads, etc., if the body temperature is low to strengthen the warmth and enhance the indoor temperature.