Bleeding after tooth extraction is very common in clinical practice. Usually bleeding after tooth extraction can be stopped within 5-10 minutes after filling with cotton. If the bleeding cannot be stopped after 5-10 minutes, it is called post-extraction bleeding. There are many ways to deal with bleeding after tooth extraction, and the simpler way is to use the filling method, such as filling the sponge to stop bleeding, gelatin sponge and so on. If the bleeding still cannot be stopped after filling with cotton, it should be treated in the hospital. There are many treatment methods in the hospital, such as electrocoagulation, which can coagulate the blood vessels; for example, to stop the bleeding by ligation; for example, you can also do the treatment of the alveolar fossa, after finding the large blood vessel bundle for filling; if there is a lesion in the jaw bone and there is serious bleeding, you can fill the alveolar fossa with a large amount of bone wax, gelatin sponge or iodoform gauze, etc. Generally, after treatment with caulking, suturing, ligature, iodine spun gauze strips or bone wax filling, the bleeding after tooth extraction can be solved in the vast majority of patients.