The methods of physical cooling are as follows: 1. Wipe with a warm water towel, avoid alcohol wipe, wipe parts should be selected from the front chest, back and aorta, such as the neck, armpits, groin, etc. 2. Drink more warm water to avoid high fever caused by a large amount of water loss caused by fever does not drop. 3. When giving physical cooling should pay attention to the temperature of the environment and air circulation, to avoid giving physical cooling due to excessive ventilation, causing or aggravating the wind chill. If the effect of physical cooling is not obvious, oral antipyretics should be administered if necessary.