目的探讨椎基底动脉供血不足的发病机制。方法对105例椎基底动脉供血不足患者行脑血管造影,按造影结果对症状、体征及发病特点进行分析。结果51例患者造影未见异常,22例颈动脉系统出现异常,26例椎基底动脉系统出现异常,5例前后循环均见异常。结论椎基底动脉供血不足是一个模糊的概念,多种疾病表现与其类似,亟待进一步规范。 Objective To investigate the pathogenesis of vertebrobasilar insufficiency. Methods Cerebral angiography was performed in 105 patients with vertebrobasilar insufficiency. The symptoms, signs and characteristics of the disease were analyzed according to the angiographic results. Results There were no abnormalities in 51 cases, abnormal carotid system in 22 cases, abnormal vertebrobasilar system in 26 cases, abnormalities in 5 cases before and after circulation. Conclusions Insufficient blood supply to the vertebrobasilar artery is a vague concept. The performance of various diseases is similar to that of other diseases, which needs to be further regulated.