Gums bleed because of gingivitis and periodontitis, in addition to patients with hypertension, coagulation disorders, chronic liver disease and pregnant women. The vast majority of bleeding gums are due to gingivitis and periodontitis, two inflammatory diseases caused by the accumulation of tartar and plaque at the gums, the typical clinical symptoms are bleeding gums, redness and swelling, root exposure and oral odor, the treatment of these two diseases is ultrasonic scaling, subgingival scaling, and in conjunction with the patient’s own long-term oral hygiene maintenance and regular follow-up, about every six months to a year need to Routine dental scaling is performed. Patients with hypertension and blood clotting disorders may experience spontaneous bleeding from the gums that is heavy and difficult to stop. Gum bleeding is also aggravated by hormonal changes in women during pregnancy, which cause the capillaries in the gums to dilate.