For infants, contact temperature measurement is generally used, such as the measurement of armpit, mouth, anus and other parts of the body is relatively accurate. Contact temperature measurement is relative to non-contact measurement, contact measurement is the use of traditional thermometers to measure the temperature of the armpits, oral temperature and anal temperature, this way of direct contact with the human body to carry out measurements, subject to the environment and other factors have less influence, the results of the measurement is relatively more accurate. Measuring an infant’s body temperature is usually more convenient with axillary temperature measurement. An axillary temperature of 37.3-38 degrees belongs to low fever; between 38-39 degrees belongs to medium fever, and between 39-41 degrees belongs to high fever. Parents should take their babies to the hospital in time to find out the cause and treat them if they have fever.