A system and method for Brugada syndrome epicardial ablation comprising preparing an endocardial duration map； preparing a baseline epicardial duration map comprising at least one or more areas of delimination； and when some of the areas of delimination are greater than 200ms, performing epicardial ablation of the areas of delimination greater than 200ms. The method may further comprise preparing an updated epicardial duration map after performing epicardial ablation, and determining whether or not a BrS pattern appears in the updated epicardial duration map； and when the BrS pattern appears, performing epicardial ablation. The method may further comprise preparing an updated epicardial duration map after performing epicardial ablation, and determining whether or not an abnormal EGM exists in the updated epicardial duration map； and when the abnormal EGM exists, performing epicardial ablation. The method may further comprise preparing an updated epicardial map comprising maintaining anatomical volume data and adding electroanatomical data.
