Adults with a fever of 38.5 ℃, you can drink more warm water, is conducive to the sweat discharge, has the effect of lowering the body temperature, you can supplement vitamin C, pay attention to rest, try to avoid going to the crowded places to prevent cross-infection. You can take ibuprofen, acetaminophen, or indomethacin suppository anus, with the efficacy of antipyretic and analgesic, can play a rapid role in reducing fever. If accompanied by nasal congestion, runny nose, sneezing, sore throat, muscle aches and pains and other symptoms, most of the upper respiratory tract infection caused by fever symptoms. Oral anti-cold medicines can be used to treat the symptoms, such as cold and flu granules, MeiGui PseudoMa capsule, Benoit dispersible tablets, compound aminophenol alkylamine tablets, etc., which are able to treat and alleviate the symptoms of fever caused by the common cold and influenza. It can also be treated with proprietary Chinese medicines such as Blue Baicalin Oral Liquid, Shuanghuanglian Oral Liquid, Lianhua Qingdian Granules, Qingkailing Granules, Banlangen Granules and other heat-removing and detoxifying medicines. If the fever is caused by epidemic virus, you can take oseltamivir phosphate capsule orally for 5 days and 1 course of treatment. It can prevent and control the attack of influenza virus.