The axillary temperature of a 2-year-old baby is 36 degrees to 37 degrees is the normal body temperature. Usually, there are four ways to measure the temperature of such an old baby, including axillary thermometry, in-ear thermometry, anal thermometry and oral thermometry, the most commonly used and safest is axillary thermometry, in-ear thermometry is more expensive because of the instrument, so the clinic is generally not used. Anal thermometry, such a large child, if awake may not cooperate. If the anal temperature is greater than 37.8 degrees, the oral temperature is greater than 37.5 degrees, and the axillary temperature is greater than 37.3 degrees, it is considered a fever. Another way to measure the temperature is to take the child’s basal body temperature every morning. In this case, if the temperature is 1 degree higher than the basal body temperature, consider the child to have a fever.