Indications for cardiac radiofrequency ablation include: 1, atrioventricular node folding tachycardia: success rate of 95% and risk of atrioventricular block <1%; 2, atrioventricular folding tachycardia: success rate of 95%, less common atrioventricular folding tachycardia with success rate >95%, such as the bypass next to the bundle of Hirschsprung; 3, atrial flutter: radical treatment is achieved by ablating the isthmus of the tricuspid valve; 4, atrial tachycardia: three-dimensional labeling of the Atrial fibrillation: the success rate of paroxysmal atrial fibrillation is 80%-90%, and the success rate of sustained atrial fibrillation is about 70%; 6, ventricular arrhythmia; 7, other organic heart disease combined with frequent ventricular premature of this unit; 8, ventricular tachycardia: including branch folding ventricular tachycardia, bundle branch folding ventricular tachycardia, scar ventricular tachycardia.