There is no such thing as the most effective way to reduce fever, and treatment varies from person to person. Fever may be caused by acute upper respiratory tract infections, lower respiratory tract infections, urinary tract infections, etc., and requires targeted anti-infective treatment, and with physical cooling or medication to lower the temperature. 1. Acute upper respiratory tract infections: most often due to viral infections, there is no effective antiviral drugs, mainly drink more water, more rest, if secondary bacterial infections, the need for oral antibiotics, such as amoxicillin, cephradine and so on. 2. Lower respiratory tract infections, such as pneumonia, if the bacterial pneumonia is mild, oral amoxicillin clavulanate potassium, amoxicillin, etc., if the condition is serious need to intravenous infusion treatment. For mycoplasma pneumonia, need oral macrolide antibiotic drugs, such as erythromycin, azithromycin, when the condition is serious intravenous infusion treatment. 3. Urinary system infection: generally need oral antibiotic drugs, such as norfloxacin, levofloxacin treatment, it is best to do urine culture and drug sensitivity test, choose sensitive antibiotic drug treatment. In addition, if the body temperature does not exceed 38.5 degrees, generally do not recommend the use of antipyretic drugs, you can take physical cooling methods, such as warm water bath, cold compresses, alcohol baths, etc., in the warm water bath, you can be on the forehead, neck, forehead, back, palms of the hands, feet, and other parts of the rubbing a few more times, can help reduce fever. When the fever must follow the doctor’s instructions to use fever-reducing methods, do not self-medication, if repeated fever, but also need to clarify the causes of fever, for the cause of the treatment.