The prevalence of atrial fibrillation in China is 0.77%, and according to the population projection, there are 4.2 million patients with atrial fibrillation among people over 30 years old in China. Atrial fibrillation is more common in patients with concomitant heart disease or heart failure. Certain lifestyles, such as heavy alcohol consumption and smoking, may also trigger atrial fibrillation. The risk of stroke increases fivefold in patients with atrial fibrillation, and atrial fibrillation can lead to more severe strokes and disability or death in more than 50% of patients. Anticoagulation is an important strategy for the treatment of atrial fibrillation. Myths about atrial fibrillation: Myth 1 Atrial fibrillation does not require treatment if there are no symptoms The danger of atrial fibrillation does not depend on the severity of the symptoms. If left untreated, the heart will gradually enlarge and can lead to heart failure and stroke, ultimately increasing the risk of death. Myth 2: Paroxysmal atrial fibrillation does not matter Some people have paroxysmal atrial fibrillation, with infrequent episodes, but are at high risk of stroke. These people also need anticoagulation therapy. Others will progress to persistent atrial fibrillation and have a higher risk of stroke. Myth 3 The risk of taking anticoagulants is high and the benefits are not worth the costs Warfarin is a traditional anticoagulant. For patients on warfarin anticoagulation, testing coagulation as required is an important measure for safe and effective anticoagulation therapy. Those at increased risk of bleeding are often at increased risk of stroke, and these patients may benefit more from anticoagulation therapy. There are now newer drugs that are safer, do not require testing, and are practical and more convenient. Myth 4: Atrial fibrillation is coronary artery disease Atrial fibrillation and coronary artery disease are two heart diseases with different mechanisms, most patients with atrial fibrillation revelation and coronary artery disease are not necessarily related, according to the treatment of coronary artery disease atrial fibrillation will be “bullheaded”, it is recommended that patients with atrial fibrillation, do not simply think they are coronary artery disease. The most important hazard of atrial fibrillation is thromboembolism, especially cerebral embolism, which is the most direct cause of death in atrial fibrillation patients. Anticoagulation is the most important strategy of treatment because of its effectiveness in reducing the incidence of stroke and thus mortality.