Abstract: Objective: To evaluate the procedures and clinical effect of vertebral dissecting aneurysms by endovascular treatment.Method: Twenty-nine patients with dissecting aneurysms were confirmed angiographically,and accepted endovascular treatment from September 2007 to June 2010.The clinical presentations,endovascular procedures,as well as clinical results were retrospectively reviewed.Result: The method included occlusion of parent artery plus aneurysm embolization for 19 cases,stent-assistant coil embolization for 5 cases,and stent technique for 5 cases.21 patients were followed-up angiographically from 3 months to 2 years(average 8 months).Among 14 patients with internal trapping,there was no recurrence of aneurysms.Among 2 patients with stent-assisted embolization,one aneurysm showed recurrence.Among 2 patients with single stent implantation,one aneurysm showed residue,while one aneurysm disappeared.Among 2 patients with double-stent implantation,one aneurysm diminished,while one aneurysm disappeared.Conclusion: Complete occlusion of the vertebral dissecting aneurysm and its parent artery is the best endovascular method for vertebral dissecting aneurysm.If aneurysms located at dominant vertebral artery,or involved the posterior inferior cerebellar artery,the other methods including double stent method and stent assistant coil embolization may be effective.