The causes of constant bleeding of teeth include both localized oral diseases and systemic diseases such as blood system diseases and metabolic diseases. The most common reason for teeth bleeding all the time is simple oral local diseases, such as plaque mineralization to form dental calculus on the gums to produce continuous irritation, leading to gingivitis, periodontitis, which leads to continuous bleeding, and even irreversible destruction of periodontal tissues and loose teeth. In addition, teeth keep bleeding is also seen in oral diseases other than systemic diseases, such as leukemia, hemophilia, aplastic anemia, thrombocytopenic purpura, cirrhosis of the liver, nephritis in the late stage, etc., resulting in coagulation dysfunction, resulting in oral lesions manifested as teeth keep bleeding. When there is bleeding teeth all the time, it is necessary to consult a doctor in time, under the guidance of the doctor to clarify the cause of bleeding and then reasonable treatment.