The normal range of body temperature is between 36.5 and 37.3°C. If the patient’s body temperature exceeds, 37.3°C. The clinical diagnosis of fever can be confirmed, when the temperature refers to the temperature of the axilla. If the patient has fever, it is necessary to combine the patient’s clinical manifestations and relevant auxiliary examinations to clarify the diagnosis, which need to be improved including routine blood tests, calcitoninogen, chest X-ray, etc. If the patient is infected with a virus, the patient can be treated with antipyretic drugs such as Pudilan, Qingkai Ling, or antiviral drugs such as Tamiflu. If the patient is a bacterial infection, antibiotics can be used for treatment. Commonly used antibiotics include amoxicillin, cefixime, cefaclor, roxithromycin, etc. If the patient is infected with mycoplasma, he or she needs to be treated with roxithromycin, levofloxacin and other related drugs.