Abstract: Objective To analyze the results of cerebral DSA and related risk factors in patients with vascular vertigo, and to improve the understanding of vascular factors in patients. Methods A total of 148 vascular vertigo patients who were hospitalized in Neurology Department of the Second Affiliated Hospital of Xi' an Jiaotong University with cerebral DSA from March 2017 to October 2018, were selected and divided into vertebrobasilar dolichoectasia (VBD) group (n=42) and non-VBD group (n=106). The risk factors and relationship with VBD in patients with vascular vertigo were analyzed. Results The average age of 148 patients was (59.43±13.02) years, 78 (52.7%) were male, 18 (12.2%) were basilar artery stenosis (>50%) and 42 (28.4%) were VBD. There were significant differences in male, hypertension and vertebral artery dominance between VBD and non-VBD groups (all P<0.05), but there was no significant difference in diabetes, hyperlipidemia, coronary heart disease, hyperhomocysteinemia, hyperuricemia, smoking, drinking, vertigo history and vertebrobasilar artery stenosis between the two groups (all P>0.05). Logistic regression analysis showed that vertebral artery dominance was an independent risk factor for the VBD(OR=4.326,P=0.001). The DHI scores in VBD group was (81.14±9.42) and that in non-VBD group was (69.25±8.57, t=7.253,P<0.001). Conclusion With the continuous development of imaging technology and the deep understanding of disease, VBD is no longer a rare vascular disease, which may closely relate to the occurrence of vascular vertigo. Vertigo patients with VBD had more severe vertigo and higher disability. Vertebral artery dominance is an independent risk factor for the VBD.