Usually, the standard temperature for physical cooling is when the body temperature exceeds 38℃, then physical cooling can be carried out. However, if the body temperature exceeds 39.5 ℃, it is best not to carry out physical cooling, because when the body temperature is too high to carry out physical cooling, the cooling effect is general. If the body temperature exceeds 39.5 ℃ and then carry out physical cooling, will not play a significant therapeutic effect, in the body temperature of 38 ℃ when carrying out physical cooling, will achieve very obvious results. It is recommended to use warm water for physical cooling, wipe the patient’s forehead, ears and lips, wipe along the jaw to the patient’s armpits, and then wipe the hearts of both hands and feet, and finally wipe the trunk and limbs.