For adults with fever above 38℃, physical cooling is the mainstay; if the body temperature rises further, oral antipyretic drugs can be administered appropriately. Of course, in addition to antipyretic treatment, further blood tests and C-reactive protein are needed in the hospital to determine the cause of the fever. If the fever is caused by bacterial infection, appropriate oral antibiotics are needed; if the fever is caused by viral infection, antiviral and antipyretic drugs can be used; if there are other clinical symptoms, appropriate attention is also needed; if there is coughing and coughing of sputum, we should be alert to lung infection, and chest X-ray is usually done routinely; if there are symptoms of diarrhea, stool routine should be checked. Therefore, for patients with fever, it is necessary to further improve the relevant examination to clarify according to their accompanying symptoms.