In general, paroxysmal supraventricular tachycardia, atrial arrhythmia, and ventricular arrhythmia require cardiac ablation. 1. Paroxysmal supraventricular tachycardia: Some patients with paroxysmal supraventricular tachycardia have too frequent episodes, and the effect of antiarrhythmic drugs is unsatisfactory, or the patients are not willing to take antiarrhythmic drugs, then the clinic can usually consider doing cardiac radiofrequency ablation, and in general, it can achieve a more satisfactory effect. 2. Atrial arrhythmia: including atrial premature beats, if the 24-hour ECG shows that the number of premature beats is more than 10,000, this case can choose to do cardiac radiofrequency ablation, and often can achieve satisfactory results. Recurrent atrial flutter, atrial fibrillation, if the patient’s condition allows ablation, usually also choose cardiac radiofrequency ablation. 3. Ventricular arrhythmia: Frequent ventricular premature beats, which are greater than 10,000 beats per 24 hours, can be subjected to cardiac radiofrequency ablation. There are also paroxysmal ventricular tachycardia, ventricular flutter, and ventricular fibrillation caused by some ion channels, which are all indications for cardiac radiofrequency ablation. The specific need for cardiac ablation should be confirmed by the doctor based on the patient’s specific condition, and should not be done on one’s own.