The swelling of the face after tooth extraction can be relieved by local cold compresses under the guidance of the doctor and hot compresses after 48 hours, and the swelling and pain can be relieved after 2-3 days. If the swelling and pain cannot be relieved, you should consult a doctor in time.1. Cold compress: applying cold compress within 48 hours can induce local vasoconstriction, reduce bleeding and achieve the effect of swelling and pain relief. Use a towel to wrap ice on the lateral part of the tooth extraction, avoid direct contact with the skin to prevent frostbite, or choose to place an ice pack in the refrigerator freezer layer. Cold compress time should not last too long, each time compress 10-15 minutes, rest for a while and then compress; 2, hot compress: 48 hours after the hot compress, can improve the local blood circulation of the wound, promote the swelling to subside. You can use hot towels, hot water bags on the face, do not contain hot water in the mouth for hot compresses, to avoid causing bleeding. Apply hot compresses for 15-20 minutes each time and pay attention to the temperature of hot compresses to avoid burns; 3. Anti-inflammatory: applying anti-inflammatory drugs or adding hormonal drugs such as cephalosporin, ornidazole or levofloxacin if necessary under the guidance of doctors can reduce the facial swelling after tooth extraction and also prevent infection. In addition, after tooth extraction, pay attention to keep the mouth clean and eat more light, warm and cool food to avoid overly hot and hard food causing re-injury to the trauma and bleeding.