Catheter radiofrequency ablation is the treatment of choice for persistent atrial tachycardia, especially for restless atrial tachycardia. The preferred treatment for atrial flutter (atrial flutter) is catheter radiofrequency ablation. In paroxysmal supraventricular tachycardia, including pre-excitation syndrome, the preferred radical treatment is catheter radiofrequency ablation. Idiopathic monogenic ventricular tachycardia, which is poorly treated with medication, is an indication for catheter radiofrequency ablation. Frequent monogenic ventricular premature beats greater than 10,000/day are an indication for catheter radiofrequency ablation with far better efficacy than drugs. Paroxysmal and persistent atrial fibrillation can be treated with radiofrequency ablation to maintain sinus rhythm with better efficacy than pharmacological therapy.