A lost tooth that keeps bleeding can be treated by applying pressure or sutures to the wound to stop the bleeding. It is also necessary to rule out the presence of hematologic disorders. If the wound is small and bleeds little after tooth loss, compression with cotton balls or gauze can be applied to stop bleeding; if the wound bleeds a lot and the compression method is not effective in stopping the bleeding, para-suture can be applied to the wound to achieve the purpose of stopping bleeding. At the same time, systemic diseases such as hemophilia, leukemia, etc. should be excluded, because the above diseases will lead to abnormal blood coagulation function and make the wound bleed more than. On the other hand, timely hematological specialist treatment is required to avoid serious complications. It is recommended to consult a doctor for diagnosis and treatment in order to avoid delaying the condition.