The normal body temperature of a newborn baby mostly refers to the axillary body temperature, which is 36℃-37.0 ℃ under normal circumstances. Usually, the normal axillary temperature of newborns is 36 ℃ -37 ℃, but due to the newborn’s poor thermoregulatory ability, such as high ambient temperature, breastfeeding or crying, may lead to the phenomenon of newborns with elevated body temperature. Usually pay attention to keep the baby’s surrounding environment at a suitable temperature, good ventilation, scientifically to the baby dressed and covered, avoid wearing too thick, generally to the child’s back warm and sweat-free for the appropriate, the body temperature can generally return to normal. However, if the newborn’s body temperature continues to be lower than 36 degrees Celsius or higher than 37.3 degrees Celsius, accompanied by lethargy, loss of appetite, increased crying and other manifestations, it is recommended to consult a doctor in a timely manner, to clarify the cause of the targeted treatment.