Children with a fever of 39 degrees may have an infection, can be cooled by physical cooling, drugs (such as ibuprofen, acetaminophen, etc.) cooling methods, it is recommended to seek medical attention in a timely manner, under the guidance of professionals to avoid adverse consequences. 1. Physical cooling: If the body temperature is not more than 38.5 degrees, you can temporarily do not use drugs, take physical cooling can be. Such as the appropriate reduction of baby clothes, loose baby collar to dissipate heat, forbidden to cover the sweat. You can use a hot towel to wipe the armpits, popliteal fossa, groin, chest and back and other places rich in blood vessels, to help dissipate heat. Drink plenty of warm water to avoid dehydration. 2. Drugs to dissipate heat: Physical heat dissipation is ineffective, the body temperature is more than 38.5 degrees, you can take oral ibuprofen suspension or acetaminophen syrup and other antipyretic drugs to lower the temperature. Drugs should be taken under the guidance of a doctor to avoid adverse consequences. In addition, to lower the temperature at the same time, need to further examination, obvious cause of fever, follow the doctor’s advice to give targeted treatment and treatment.