The success rate of catheter ablation is actually related to the type of procedure. In case of supraventricular tachycardia, one needs to differentiate between dual pathway supraventricular tachycardia or bypass, or other complex arrhythmias such as atrial tachycardia, atrial flutter, especially persistent atrial fibrillation, or ventricular premature and ventricular tachycardia. So the actual success rate of radiofrequency ablation varies from disease to disease. For common supraventricular tachycardia, such as those due to bypass or double pathway, the success rate is more than 99%, especially for left-sided bypass, and the recurrence rate is very low, and most patients can be cured. However, in the case of atrial fibrillation, especially persistent atrial fibrillation, the recurrence rate as well as the success rate itself is very low, especially in the case of persistent atrial fibrillation in advanced age. The general success rate for atrial fibrillation reaches 70% and the values are conservative and vary depending on the patient’s condition. In fact, clinical studies have shown that the success rate at 5 years after RF ablation of AF is less than 30%. So the success rate varies from disease to disease and population to population. Ventricular premature, especially in the right ventricular outflow tract, has a very high success rate, usually over 90%. However, it does recur, but there are some specific sites of ventricular premature that have a very low success rate, such as ventricular premature at the top of the left ventricle. The location of the surgery is more difficult to control because of the complexity of this location, which may be the right ventricular outflow tract or the left ventricular outflow tract or the aortic sinus, or below the left ventricular outflow tract. In severe cases, ablation is also needed at the epicardial location, and the success rate of ablation is not high because of the thick epicardial fat pad, so the success rate varies greatly from disease to disease.