Bleeding after tooth extraction is mainly caused by heavy trauma or apical inflammation, which must be treated by wound closure or cleaning of inflammatory tissues in the extraction socket. 1. Complex tooth extraction such as wisdom teeth or stumps will result in greater trauma to the wound, which will lead to postoperative bleeding easily; as conventional compression hemostasis cannot effectively stop bleeding, it will result in postoperative bleeding from the wound; timely follow-up treatment of the wound with suturing to effectively stop bleeding. 2. If the extracted tooth has apical inflammation, it will affect the normal healing of the extraction fossa and lead to bleeding symptoms; it is necessary to consult a doctor to scratch and clean the inflammatory granulation tissue in the extraction fossa in order to effectively stop bleeding and promote the healing of the wound. It is recommended to consult a doctor for diagnosis and treatment to avoid delaying the condition.