The purpose of left auricular blockade is to reduce the ineffective space in the atria and avoid the formation of left atrial thrombus. Radiofrequency ablation disrupts abnormal conduction in the heart and terminates the onset of arrhythmias such as atrial fibrillation. Left atrial occlusion is mainly used in the treatment of patients with atrial fibrillation, and the main indication is atrial fibrillation caused by non-valvular disease. Atrial fibrillation is often accompanied by an increase in the size of the left atrium, and the local blood stagnation makes it easy to form thrombus, which mainly occurs in the left atrium. Left auricle blockade can reduce the ineffective space of the left atrium, reduce the risk of thrombosis, prevent the occurrence of embolism, and is suitable for patients who cannot tolerate anticoagulants. Radiofrequency ablation is mainly used to destroy the abnormal conduction system of the heart, and is able to terminate episodes of tachyarrhythmia, such as atrial fibrillation and paroxysmal supraventricular tachycardia, and avoid the need for patients to take long-term oral anti-arrhythmic and anticoagulant medications. Patients should choose the appropriate treatment according to the physician’s guidance for better treatment for patients.