The normal body temperature for infants and children is between 36.5°C and 37.5°C. There are several ways to measure body temperature, including oral temperature, axillary temperature and anal temperature. Axillary temperature is the temperature of the armpit, you can take a thermometer to measure it. If the temperature of the armpit is more than 37.5℃, it is considered a fever; if the mouth temperature is more than 37.8℃, it is considered a fever; the temperature of the anus will be higher, generally more than 38℃, it is considered a fever. Usually, the body temperature of infants and children will change with the environment and other factors. If the environmental temperature is too high, it will cause the baby’s body temperature to increase slightly, and if it is too low, the baby’s body temperature will drop. As long as the baby’s body temperature is within the normal range, it is fine.