In general, the rewarming of a newborn with cold injury syndrome follows a gradual progression, returning the newborn’s body temperature to normal within 12-24 hours. If the neonate has cold injury syndrome, there will be hard swelling of the skin as well as a relatively low body temperature. The main causes of cold syndrome in newborns are cold or infection. Because the newborn’s skin is hardened and the subcutaneous fat is very weak, in this case, rewarming the newborn must be done slowly; if the rewarming is done too quickly, it can lead to injury or even failure of rewarming the newborn. If the rewarming is too slow, it will not be conducive to the newborn’s health.