Fever after wisdom tooth extraction should firstly be distinguished from postoperative physiological postoperative absorption fever or fever caused by postoperative pathological infection, and the measures taken for these two cases are different. In case of physiological postoperative absorption fever, which usually occurs within 2-3 days after tooth extraction, the body temperature is relatively low, usually not exceeding 38 degrees 5℃, and is not accompanied by other obvious pathological symptoms, no special intervention is needed in this case. The patient is advised to follow the medical advice after tooth extraction, drink more water normally, pay attention to the extraction wound and maintain oral hygiene. However, if a fever with a high body temperature occurs more than 3 days after tooth extraction, accompanied by pain in the extraction wound and obvious odor in the mouth, it is possible that an infection after tooth extraction has occurred, resulting in infectious fever. In this case, incision and drainage of pus should be performed for the local infection. For the whole body, the application of antibiotics can be considered under the guidance of bacterial culture and drug sensitivity test if available. If this condition is not available, the application of cephalosporin combined with nitroimidazoles can be considered to control the infection and prevent its further spread.