The swelling and pain at the extraction wound after wisdom tooth extraction is a normal postoperative reaction, with only slight pain and basically no effect on normal activities such as eating and speaking, and the swelling and pain will disappear in about 1 week under normal circumstances. Under normal circumstances, soft and bone tissues will be damaged to different degrees when wisdom teeth are extracted, and the metabolic decomposition products caused by the trauma will stimulate the nerve endings, which in turn will cause painful reactions, but they will generally be significantly relieved or even disappear in about 7 days. In addition, the swelling and pain after tooth extraction is also closely related to the degree of trauma during tooth extraction, and reducing the trauma caused during tooth extraction is the key to reduce the swelling and pain after tooth extraction. Compared with traditional extraction methods, minimally invasive extraction techniques are now mature, causing less trauma to patients and less postoperative reaction. However, as the wisdom tooth extraction process is more traumatic and takes longer than that of ordinary teeth, it is more likely to produce post-operative pain and swelling reactions. Cold compresses are recommended within 24 hours after surgery. If the swelling and pain are severe or unbearable, painkillers can be taken. Antibiotics can be used prophylactically to prevent infection of the incision, and brushing, rinsing and hot baths can be avoided for 24 hours.