目的　分析国内缺血性脑血管病人颅内外颈动脉粥样硬化的程度和分布 ,以指导脑血管病的治疗和预防。方法　通过经颅和双功能彩色多普勒超声检测颅内外血管 ,检测动脉粥样硬化程度 ,并参照其病史、CT或MRI检查及生化指标综合分析。结果　 2 0 1例患者 ,颅内颈内动脉及分支狭窄 75人 ,患病率为 37% ,颅外颈动脉大于 5 0 %狭窄的有 5 0例 ,患病率为 2 5 % ,其中 12例为颈内动脉闭塞 ,患病率为 6 % ,糖尿病是造成颅内外血管狭窄的危险因素之一。结论　脑梗塞患者颅内血管病变是发病的原因之一 ,同时发现颅外血管病变日益增多 Objective To analyze the degree and distribution of intracranial and extracranial carotid atherosclerosis in patients with ischemic cerebrovascular disease in order to guide the treatment and prevention of cerebrovascular disease. Methods Intracranial and extracranial blood vessels were detected by transcranial and bifunctional color Doppler sonography, and the degree of atherosclerosis was measured. According to their medical history, CT or MRI examination and biochemical analysis, the results were analyzed. Results There were 50 patients with intracranial internal carotid artery and branch stenosis with 37% prevalence and 50 cases with more than 50% stenosis of extracranial carotid artery, with a prevalence of 25%, of which 12 Case of internal carotid artery occlusion, the prevalence was 6%, diabetes is one of the risk factors for intracranial and extracranial vascular stenosis. Conclusion Cerebral infarction patients with intracranial vascular disease is one of the reasons for the disease, while increasing extracranial vascular lesions found