If a 9-year-old child has a fever, if the body temperature does not exceed 38.5℃ and the mental condition is relatively good, you can drink more plain water to prevent convulsions and dehydration caused by high fever. Pay attention to rest and wipe the forehead, armpits and groin with warm water. If the body temperature exceeds 38.5℃, treat with medication, you can take oral ibuprofen suspension, i.e. pediatric aminophenol xanthamine pellets for symptomatic treatment. If the high fever persists, accompanied by coughing and wheezing symptoms, it is recommended to go to the hospital respiratory medicine department for consultation and treatment