Left auricular occlusion and radiofrequency ablation are both used for the treatment of atrial fibrillation, but the difference between the two lies in the treatment modalities and indications. 1. Treatment mode: left auricular occlusion surgery is to block the left auricle to prevent the formation of thrombus in the left auricle during atrial fibrillation, which is mainly to block the source; whereas radiofrequency ablation surgery is to place the electrode catheter in the diseased area and release radiofrequency electric current to cause necrosis of the diseased tissues, which is mainly to eradicate the atrial fibrillation, so the two are different in the treatment mode. 2. Indications: left auricular blockade surgery is mainly for atrial fibrillation needs anticoagulation, and at the same time is not suitable for anticoagulant drugs, or there are contraindications to the patient; while radiofrequency ablation surgery is mainly to control the symptoms to reduce panic and heartbeat, etc., it is to reduce the risk of stroke, and is not intended to reduce the consumption of anticoagulant drugs. If atrial fibrillation occurs, it is recommended to consult a doctor in time, and the doctor will choose the corresponding method of treatment according to the specific situation.