Physical cooling with alcohol, mainly wipe the body’s blood vessel-rich parts, such as the back of the neck, upper arms, armpits, elbows, groin and the back of the knees, etc., these parts can focus on rubbing the bath, to improve the effect of heat dissipation. It should be noted that the use of alcohol for physical cooling, should consider the concentration of alcohol, medical alcohol ethanol concentration of 75%, can not be used directly to wipe the body, need to be diluted to 20% -25%, that is, roughly equivalent to a share of medical alcohol plus the same amount of water 1:1 for blending. In addition, the temperature of the water should be slightly higher than the body temperature, generally choose 32-34 ℃, so that the temperature of the blended alcohol is close to the body temperature, not too cold to cause discomfort to the patient. Also need to pay attention to the physical cooling of young children is not recommended to use alcohol to reduce fever, because the pediatric body surface area is relatively large, thin and tender skin, subcutaneous blood vessels are rich in fever, the whole body blood vessels are in a state of dilation, may absorb too much ethanol caused by alcohol poisoning.