Atrial fibrillation bleeding risk score, if the patient has high blood pressure, hepatic insufficiency, renal dysfunction, stroke, bleeding, INR is relatively easy to fluctuate, age is greater than 65 years old, oral antiplatelet drugs on weekdays, taking non-steroidal anti-inflammatory drugs, or the presence of alcoholism, each of the above conditions is one point, when the patient’s bleeding score is greater than or equal to three points, it means that the patient is at high risk of bleeding. This score should not be considered a contraindication to anticoagulation. For patients with relatively high scores, percutaneous left heart ear block can be considered accordingly to prevent thromboembolism. Patients are advised to keep their blood pressure under control during the day and to monitor for bleeding. For patients taking warfarin, it is important to monitor the International Normalized Ratio, often referred to as the INR.