Supraventricular tachycardia is the type of tachycardia for which it is well established why it develops and for which there is the most experience with treatment. Theoretically, the success rate for supraventricular tachycardia is around 99%. Of course, the success rate varies from center to center, and in experienced centers, the success rate for supraventricular tachycardia is over 99%. As a patient and as a family, no one wants risks to occur. But after all, surgery has certain risks that cannot be completely avoided. We can only say that as patients and operators, both cooperate with each other to avoid complications as much as possible, because we all have the same goal: to eradicate supraventricular tachycardia by solving the faulty lesion safely and beautifully. Radiofrequency ablation therapy, as a procedure, is bound to have certain risks, but the incidence of such risks is actually very low, less than 1%. Of course, if it happens, it is a 100% risk for the patient. The so-called risk, in fact, can be understood as: people walking on the road, not to hit the car, but inevitably will unfortunately be hit by a car, only the problem of occurrence or not. Radiofrequency ablation of supraventricular tachycardia is still very mature, and for patients with recurrent episodes, it is recommended to perform radiofrequency ablation as early as possible, as the benefits far outweigh the possible risks. In principle, from a technical point of view, although radiofrequency ablation has a very high success rate for supraventricular tachycardia, it should be understood that there is absolutely no 100% success rate in medical treatment. Objectively, recurrence or failure does occur. Prior to radiofrequency ablation, the physician should communicate fully with the patient about these issues, explain the possibility of such cases, and obtain the patient’s informed consent. The incidence of recurrence is about 1%. The causes of recurrence can be multifactorial, ranging from the disease itself to a variety of factors such as surgical instruments and the operator. In cases of post-operative recurrence, secondary ablation can be successful in most cases. In the case of a failed procedure, if the patient is determined to try again after weighing the options and finding an experienced surgeon, there is still a good chance of success. It should be understood that reoperation in cases of failed surgery or post-operative recurrence is a burden to the patient and a test of the surgeon’s skill, courage and patience.