Common methods of physical cooling of infants include warm water bath, hydration, and reduction of clothing and blankets. 1. Warm water bath: use a warm towel to wipe the location where the large blood vessels pass through, such as the neck, armpits, the roots of the thighs, etc., to help infants dissipate heat. Pay attention to the temperature of the water to control at about 32 ~ 34 ℃, so as to avoid the baby from getting cold. 2. Supplemental hydration: when the body temperature is high, sweating more, metabolism is faster, need to supplement water in time to prevent dehydration, and at the same time to help sweating and urination, which helps to lower the body temperature. 3. Reduce clothing and blankets: By reducing clothing and blankets, increase the release of heat to cool down the baby. However, it is important to pay attention to timely increase or decrease to avoid the baby catching cold. If the above methods can not lower the temperature in time, you should go to a regular hospital under the guidance of a doctor.