The most effective methods of physical cooling: First, the use of alcohol baths for treatment, alcohol scrubbing the skin, such as rubbing the neck, chest, armpits, limbs, hands and feet, etc., can stimulate the expansion of blood vessels and skin in patients with high fever, increasing the skin’s ability to dissipate heat, thereby achieving the effect of reducing body temperature. Second, the use of ice, with cold towels or with ice placed on the patient’s body surface, the same is placed on the neck, underarms, chest, limbs and other parts, can be placed in large areas, so that the skin heat dissipation sweating, so as to achieve the purpose of reducing body temperature.