Coronary artery perforation is a life-threatening complication during percutaneous coronary intervention (PCI) although it occurs rarely in contemporary era with incidence ranging from 0.1% to 0.8%.1-8 The overall mortality remains quite high and varied with the type of perforation, with higher risk in type Ⅱ and Ⅲ.2-5 Previous studies have demonstrated that some therapeutic measures can effectively seal the perforation including prolonged balloon inflation,implantation of polytetrafluoroethylene (PTFE)-covered stents, embolization with microcoils, gelfoam or polyvinyl alcohol, and coronary artery bypass grafting (CABG).