The body temperature of 37.5 after tooth extraction may be caused by the nervous stress reaction after tooth extraction, or the fever may be caused by the inflammatory reaction in the body after tooth extraction. You should pay attention to rest, avoid exertion, and use anti-inflammatory drugs if you have a fever for a long time and your temperature is getting higher. After tooth extraction, the body will have a stress reaction, and there will be a short period of low-grade fever and body chills. If the body temperature does not go down for a long time, there may be an inflammatory reaction, and the wound where the tooth was extracted may become infected. You can check your temperature every half an hour. If the fever and chills are caused by the stress reaction, the temperature will return to normal in a short period of time. If the fever does not subside for a long time and the condition is getting more and more serious, consult a doctor in time and use anti-inflammatory drugs such as cephalosporin and metronidazole under the guidance of the doctor. After tooth extraction, pay attention to rest, less late at night, and keep a light diet.