Wisdom teeth are mostly extracted due to malposition and prevention of adjacent teeth damage. After tooth extraction, the common complications are: 1. facial swelling and restricted mouth opening, mostly caused by postoperative inflammation, can be applied with local cold compresses after tooth extraction to reduce swelling, and oral antimicrobial agents for 3…5 days depending on the situation; 2. postoperative bleeding, usually related to the failure to dispose of the extraction trauma, it is best to observe in the hospital for 40 minutes after tooth extraction and leave the hospital after spitting out hemostatic gauze or cotton rolls, if there is 3, local sensory numbness, due to the abnormal position of the wisdom tooth adjacent to the nerve canal, it is easy to produce pressure on the nerve during surgery, resulting in local sensory numbness of the lower lip after surgery, if there is still numbness 2 hours after surgery, oral nerve-nourishing drugs such as vitamin B1 and vitamin B12 are needed, if the numbness is heavy, early If the numbness is severe, hormone can be given to reduce edema, and it can generally return to normal in half to three months after tooth extraction, and very few people will recover poorly; 4. Loosening of adjacent teeth is mostly caused by local lack of bone after intraoperative debridement and wisdom tooth extraction, and nowadays, minimally invasive operation is mostly used, which generally rarely causes loosening of adjacent teeth unless in special cases. The above are the more common complications, which can be mostly recovered through treatment.