Intracranial vertebrobasilar dissecting aneurysms（ IVBDAs） are arterial dissections that occur in the intracranial and basilar arteries of the vertebral artery with aneurysm formation as the main morphological change. The causes and precise mechanism of IVBDAs are not clear. The clinical manifestations of IVBDAs are non-specific， complex and varied， and may evolve and transform over time. The imaging manifestations are complex and varied as well. There are still controversies about the epidemiology， natural history， etiology and pathogenesis， diagnostic methods and treatment strategies of IVBDAs. The paper reviews the recent literature on IVBDA and summarizes research development.