Body temperature is an important element in assessing the health status of newborns, usually in a quiet state, using a mercury thermometer to measure the axillary temperature for about 5min, need to pay attention to the local skin dryness and so on. The normal axillary body temperature of newborns is generally 36.0-37.0 ℃, due to the imperfect development of its temperature center, easily affected by environmental or pathogenic factors, the correct measurement of body temperature is an important part of the assessment of the baby’s health status. Through the measurement of oral temperature and anal temperature is not easy to operate, there is a risk, usually measuring the axillary temperature, generally need to be in the baby’s quiet state, to avoid breastfeeding or crying under the measurement, to keep the local skin dry, such as the use of mercury thermometer is recommended to measure the 5min, the use of electronic thermometers need to be used according to the instructions of the formal use. At the same time, it is necessary to pay attention to avoid too thick a blanket, indoor ambient temperature and other factors, can affect the temperature measurement. It is recommended to consult a healthcare professional for guidance when necessary.