Radiofrequency ablation: It refers to the insertion of electrode catheter into the heart cavity by percutaneous puncture, and the radiofrequency energy is distributed between the head end of the ablation catheter and another electrode plate on the body surface with a frequency of 300-750 khz of alternating current, which selectively causes coagulative necrosis of part of the myocardial tissue that causes rapid arrhythmias by generating heat through impedance and being converted into heat energy, thus achieving a radical effect. A treatment method. Since then, with the research on the mechanism of tachyarrhythmia and the introduction of radiofrequency ablation, its effectiveness and safety have been rapidly improved and its indications have been expanded, and it has become a common treatment method in the field of arrhythmia treatment. Advantages of radiofrequency ablation: 1.No damage to the heart: the local damage to the myocardium caused by radiofrequency current is very limited, about 3~4mm in diameter and depth, which will not affect the normal function of the heart; 2.Minimally invasive: no need to open the chest, only need to puncture the vein or arterial vessels, which does not affect the aesthetics, and the incision is small, only 2mm; 3.No side effects: the operation is performed under local anesthesia, the patient is awake during the whole operation. 4.Fast recovery: the operation time is short, most of the operation time can be completed within an hour, and the patient can go to the ground on the second day of the operation and be discharged in two to three days; 5.Less pain: RA-catheter radiofrequency ablation is punctured in the flexural artery, which is easy for postoperative care, no infection, no thrombosis 6. Real-time efficacy assessment: the success of the procedure can be confirmed by intracardiac electrophysiological examination.