Isolated atrial fibrillation without combined organic pathology poses a serious threat to the patient’s cardiac function, health status and quality of life. Minimally invasive radiofrequency ablation surgery is performed through small bilateral chest incisions, assisted by thoracoscopy, to ablate the epicardium in the critical areas where atrial fibrillation occurs and is maintained without the heart beating. The minimally invasive cardiac surgical ablation procedure consists of four main operations: extensive isolation of bilateral pulmonary vein vestibules; linear ablation of the left atrium; partial denervation of the epicardium; and excisional operation of the left auricle. Its main features are safety, high efficiency, small trauma and short operation time. Compared with catheter interventional ablation techniques, the main advantages of minimally invasive cardiac surgery techniques are reflected in the following: 1. The concept of minimally invasive surgery is to achieve the therapeutic measures needed to theoretically cure atrial fibrillation with the least possible trauma using surgical methods, including: isolation of the pulmonary veins, ablation of the left atrial circumflex pulmonary vein line, ablation of the autonomic ganglion, and severance and ablation of the ligaments as the four key treatments. Among them, the severance and ablation of ligaments can only be achieved by surgical procedures. 2, the removal of the left heart ear, which is also the only surgical treatment measures can be achieved. The left heart ear is the main site of blood clot formation in patients with atrial fibrillation. The removal of the left heart ear reduces the risk of thrombosis and embolism, and even in the small number of patients treated, the risk of thrombosis is still significantly reduced if atrial fibrillation is not completely cured. 3. Wall penetration and precision of ablation line. One of the keys to successful radiofrequency ablation therapy for atrial fibrillation is complete and wall penetration of the ablation line in the isolated pulmonary veins. Because the ablation line is incomplete or does not penetrate the wall, the electrical signal traffic between the pulmonary vein and the left atrium will remain, which will lead to the failure of atrial fibrillation treatment. The minimally invasive surgical ablation procedure uses a clamped bipolar RF ablation system, in which the pulmonary vein-left atrial migration and epicardial fat pad are clamped between the bipolar clamps, and then the tissue between the poles is ablated by RF energy until complete wall penetration is achieved, as prompted by the system’s unique wall penetration monitoring device. Depending on the thickness of the atrial tissue, the second, third, fourth or more transmural ablations are performed to the atrial side based on the first ablation line, thus creating multiple electrical conduction blockages and isolations. It is further necessary to emphasize that the surgical ablation line is very fine, its width is only about 1mm, and it operates under thoracoscopic and direct vision, ablating only the tissues in the target area, which can almost avoid damage to the adjacent tissues and structures. 4.High success rate of single treatment, no need for repeated ablation. Minimally invasive surgery is a single treatment, of which, the long-term cure rate, according to the foreign experience reported, can reach 91.3%. 5.Good safety and low complication rate. Minimally invasive surgery is performed under thoracoscopy and direct vision, using advanced ablation system, which can completely avoid damage to other atrial tissues other than the target tissues, and operates only on the pulmonary vein-left atrial migration, part of the left atrium, without the possible complications of catheter ablation such as pulmonary vein stenosis, esophageal injury, or even heart rupture. Therefore, as far as we can see, there are no special complications related to ablation in minimally invasive surgery, and its safety is very ideal. 6. The overall cost is low, and the average hospitalization cost is only about 60,000 yuan for minimally invasive surgical procedures as a single treatment. Therefore, it is more suitable for the economic requirements of the majority of atrial fibrillation patients and provides a more realistic choice for the treatment of atrial fibrillation. 7. No radiological damage. The general catheter intervention ablation has unavoidable X-ray radiation to both doctors and patients. Minimally invasive surgical procedures do not have this risk. 8. Low surgical risk, minimal patient injury, and rapid postoperative recovery. As mentioned above, the characteristics of minimally invasive surgery with small trauma and low risk determine the short recovery period after the patient receives treatment, and the population that can receive treatment is very wide.