Cardiac radiofrequency ablation procedures may cause some damage to the heart, such as conduction block, thrombosis and embolism, aortic valve perforation, and in severe cases, cardiac tamponade and left atrial esophageal fistula. Cardiac radiofrequency ablation is a kind of minimally invasive interventional surgery that applies electric energy and freezing through a multipolar electrode catheter to necrolyze the myocardium at the arrhythmia foci or in the abnormal conduction area in order to remove the abnormally excitable myocardial cells, in which the recurrence rate of cryoablation arrhythmia is higher than that of radiofrequency electroablation. The procedure has the advantages of low trauma, high safety and high success rate, but some complications may occur due to the level of operation technique, such as conduction block, thrombosis or even embolism, aortic valve perforation, hemopneumothorax, bleeding, myocardial injury and serum enzyme elevation. In severe cases, there can be complications such as cardiac tamponade, left atrial esophageal fistula, and pulmonary vein stenosis. It is important to note that although cardiac radiofrequency ablation may be damaging to the heart, the success rate of the procedure is still relatively high, so do not delay your condition by avoiding treatment due to possible damage to the heart.