8-year-old children with high fever first need oral antipyretics (such as ibuprofen, etc.) to reduce fever, and at the same time need to clarify the cause of fever, and to treat the cause, such as the consideration of influenza, need oral oseltamivir phosphate treatment. Fever is a common manifestation of pediatric diseases, for children aged 8 years old is usually considered normal body temperature is generally 36 ~ 37 ℃, 39 ~ 41 ℃ for high fever, a significant increase in body temperature can appear muscle pain and other general discomfort, for such children with high fever, first of all, we need to actively use antipyretic drugs, such as ibuprofen or acetaminophen, symptomatic antipyretic to alleviate the symptoms of discomfort. At the same time, it is necessary to actively consult the doctor to identify the cause of fever and carry out the treatment. For example, children with influenza may also have high fever, and such children need to be treated with oseltamivir phosphate after the diagnosis is clear. These symptoms can also be seen in children with infectious mononucleosis, who may not respond well to oral medications and may need to be treated with intravenous acyclovir. These medications should be used under the supervision of a physician. High fever can be seen in a wide range of diseases, and it is advisable to consult a specialist for evaluation and treatment.