Children with a fever of 38.5 degrees may be caused by upper respiratory tract infection, acute gastroenteritis, etc., can be dealt with through physical cooling, medication and other methods. 1. Physical cooling: children with a fever of 38.5 degrees should pay attention to rest, parents can give their children more water, appropriate reduction of clothing, pay attention to indoor ventilation, to avoid prolonged exposure to high-temperature environments, but also in the child’s forehead with a cold wet towel or ice ice stickers to help dissipate the heat, which is conducive to the return of normal body temperature. 2. Drugs to reduce temperature: for children over 2 months of age, axillary temperature ≥ 38.5 ℃, accompanied by obvious symptoms of discomfort, such as loss of appetite, poor mental health, etc., acetaminophen or ibuprofen can be used to reduce fever. If there is bacterial infection, anti-infective treatment with penicillin and other drugs can be used. Children with a fever of 38.5 degrees through physical cooling did not get improved, should be timely to the hospital, follow the doctor’s instructions for medication, parents should not give the child arbitrary use of drugs, to avoid adverse effects.