It is generally recommended to use a mercury thermometer to take a newborn’s temperature. Mercury thermometer phase measurement is relatively accurate, generally take the axillary temperature measurement method, will be placed in the armpit of the newborn mercury thermometer, but in the thermometer should pay attention to, will be inside the armpit of the newborn sweat wipe clean, and keep the newborn quiet, to avoid crying, if crying may affect the measurement of body temperature. But the mercury thermometer is easy to break the phenomenon, in the use of the action must be gentle, if the breakage can not be used to avoid injury to the newborn’s skin, but also easy to lead to mercury poisoning. If multiple measurements of the newborn’s temperature rises, you should take the newborn to the hospital in time to find out the cause.