Viral fevers usually last 3-5 days and rarely last more than a week. When a patient develops a fever, the body temperature exceeds 38.5°C. Antipyretic drugs such as ibuprofen suspension, loxoprofen sodium, acetaminophen tablets, etc. may be used. For body temperature below 38.5℃, physical cooling methods can be used, such as warm water baths, ice packs for physical cooling, etc. Viral infections can also be treated with antiviral or antipyretic drugs, such as oseltamivir, Abidor, Lianhua Qingpu capsule, Pu Di Lan, etc. If the patient’s temperature does not reach normal for more than a week, it is necessary to actively seek medical attention to further improve the relevant tests to assess whether other pathogenic microbial infections are combined, and to make corresponding treatment.