Gum bleeding is firstly considered to be due to the rupture of gum capillaries caused by factors such as hard toothbrush bristles, intake of hard food, etc. Generally, bleeding is less and can recover on its own, or the bleeding can be stopped by rinsing with cold water. In addition, gum bleeding may also be related to some diseases, and patients are recommended to actively treat them under the guidance of doctors: 1. Gingivitis: often related to bacterial infection caused by factors such as dental caries, tartar and plaque, commonly associated with chronic gingivitis, adolescent gingivitis, gingivitis during pregnancy, and plasmacytoid gingivitis. Firstly, the necrotic tissue is removed, and plaque and tartar are removed by scaling or scraping, and then treated by rinsing with hydrogen peroxide solution, etc. For those who have crippled teeth and uneven teeth, filling treatment and orthodontics are also needed; 2. Periodontitis: chronic periodontitis often has symptoms such as bleeding and overflowing pus by probing, firstly removing tartar and plaque by scaling and scraping, and if there are larger caries, filling is needed. For those who have poor efficacy or complicated periodontal abscess, antibacterial treatment is needed, and those with recurrent disease consider surgery; 3. Hypertension: If the patient himself suffers from chronic gum disease, due to elevated blood pressure, the capillary rupture of inflammation local can cause gum bleeding. Patients can be treated with oral antihypertensive drugs such as nifedipine and cloxacin under the guidance of a doctor and monitor the changes in blood pressure at any time; 4, cardiovascular disease: as patients with cardiovascular disease may use anticoagulant drugs such as aspirin and warfarin, which may cause bleeding tendency, the presence of primary gingivitis, periodontitis and other diseases may cause or aggravate gum bleeding. Patients should use the correct medication under the guidance of a doctor, or the doctor’s judgment whether to change the dosage; 5, blood diseases: such as leukemia, malignant tumors, AIDS and other diseases caused by gingival bleeding may be related to the reduction of platelets, or lesions invading the gums, which can cause acute necrotizing ulcerative gingivitis or gum lesions. First, it is necessary to remove necrotic tissue, compress to stop bleeding, and then perform rinsing with solutions such as hydrogen peroxide to treat the primary disease.