Bleeding after tooth extraction should be given according to the situation, such as biting cotton balls or gauze, suture, pressure, medication to stop bleeding, etc. If the bleeding is still needed to find out the cause of the bleeding and then give treatment. After tooth extraction should closely observe the situation of the wound, such as bleeding a lot, should promptly go to the hospital for examination and treatment. The gauze or cotton ball on the wound after tooth extraction, need to bite half an hour to spit away, can not bite too tight or too long. 24 hours within the saliva of a small amount of blood is a normal phenomenon. If there is more blood flow after tooth extraction, you should seek medical attention. You can be given treatment such as suturing the wound, filling iodoform gauze or cotton balls, pressing to stop bleeding, and using hemostatic drugs. If the bleeding is still not stopping, it should be checked under general anesthesia to see if there is any vascular damage, and blood tests such as routine blood and coagulation function should be carried out to exclude hemophilia, leukemia, or whether anticoagulant medication is being taken, etc. Only if the cause of the bleeding is found can the bleeding be stopped. Bleeding after tooth extraction should be treated under the guidance of a doctor.