Body temperature armpit takes 10 minutes, at least 5 minutes more, in the resting state to keep the armpit do not sweat too much, the normal body temperature is 36.5-37.3 ℃. If the body temperature exceeds 37.3°C, its meets the criteria for fever diagnosis. The presence of fever should be combined with the patient’s clinical symptoms and relevant auxiliary examinations to clarify the diagnosis. After fever, it is recommended to actively seek medical advice and improve blood routine, calcitoninogen, chest X-ray and other examinations. If the fever is due to a simple upper respiratory tract infection, it is usually a viral infection and can be treated with symptomatic support or antipyretic drugs. If the patient has fever due to bacterial infection, antibiotics such as amoxicillin, levofloxacin hydrochloride, and roxithromycin can be used for treatment.