Dry socket is a common type of post-extraction complication that cannot be completely prevented today even with the advanced medical technology. There is a wide variation in the incidence of dry socket in the literature, with most reports ranging from 5%-30%. The clinical manifestations are mainly severe pain 2-3 days after extraction, which may radiate to the auriculotemporal region, mandibular region or the top of the head, and the pain is not relieved by general analgesic drugs. The cause of dry socket is unclear and may be related to infection, trauma, smoking, local anatomical factors, oral contraceptive pills, staying up late after surgery, and overexertion. It has also been reported in the literature that the incidence of dry socket can be effectively reduced by using minimally invasive extraction methods, but even if the extraction is very minimally invasive and minimally invasive, a certain chance of dry socket can occur as well, causing some pain and trouble to the patient. Even if dry socket occurs, patients do not need to worry, the treatment is very simple and they will recover quickly after the treatment by the doctor.