Body temperature over 37.3°C is considered fever. Normal human body temperature is controlled by the hypothalamic thermoregulatory center, as well as the cerebral cortex. The axillary temperature is generally constant between 36 and 37°C. When there is an infection or other viral condition in the body, it can lead to fever. When the body temperature is greater than 37.3℃, it is called fever. Physical cooling can be given appropriately, such as rubbing the armpits, groin and forehead with alcohol, and when the body temperature exceeds 38.5℃, it can be combined with medication to lower the temperature, such as aspirin, ibuprofen, nimesulide, etc.