Stent fracture is an extremely rare clinical event that is related to metal fatigue, and any stent that is approved by the government administration for implantation in the coronary arteries is tested for metal fatigue and meets national standards. In foreign studies, the incidence varies greatly (1-7%), and due to the limitations of these studies, which only included hundreds of stents in a few hundred patients, these studies are only the tip of the iceberg compared to the hundreds of thousands of stents in use worldwide, so there is no objective scientific data on the incidence of this event in the real world, but these studies suggest that right coronary arteries, long stents However, these studies suggest that right coronary arteries, long stents, diffuse coronary lesions (>30 mm in length), multiple stent overlaps, and severely tortuous angulated vessels appear to be risk factors for stent dissection, and that stent wall thickness and structural characteristics are related, but there is no simple cause-and-effect relationship. Stent fracture may increase the incidence of in-stent restenosis, in-stent thrombosis, and localized aneurysmal dilatation of the coronary artery, but these are actually rare events in clinical practice, so such cases due to stent fracture are even rarer, and complete fracture has been found to be even rarer in studies. The common management strategies of clinicians for this condition include re-stenting, simple balloon dilation, coronary artery bypass grafting, and clinical follow-up. However, the clinical results are yet to be seen.