Postoperative fever usually lasts for about 2~3 days, and postoperative fever varies from person to person, not all patients will have fever after surgery. If the postoperative fever is more than 5 days, or there are some adverse symptoms, timely examination should be carried out, and then symptomatic treatment, usually the first physical way to lower the temperature, such as the use of a wet towel, wipe the patient’s forehead palms or feet to lower the temperature, if the symptoms do not subside, you can use drugs to reduce the fever, and if there is an infection in the body, you can use antibiotics to symptomatic treatment if necessary. During the use of medication to strictly follow the doctor’s instructions, to avoid self-medication, or unauthorized changes in the dosage of drugs, the use of medication should always pay attention to the temperature changes, timely communication with the doctor.