分水岭脑梗死( CWI)又称为边缘带脑梗死、交界区脑梗死等，是一种特殊类型的脑梗死。其病因和发病机制复杂，其中血管狭窄性病变作为CWI重要的发病机制之一而受到广泛关注。国内外学者研究报道指出，在不同类型的CWI患者中，通过行颈部血管彩超、经颅多普勒超声、磁共振灌注成像等血管检查技术，均能够发现大脑中动脉或颈内动脉等颅内大血管的狭窄性病变。此外，动脉粥样硬化斑块的稳定性亦作为重要的危险因素参与CWI的形成。由于可以针对不同病因采取相应治疗措施，因此CWI的预后情况通常较好。对于那些不稳定斑块或血管狭窄病变的CWI患者，及早进行血管内治疗，必要时行血管内膜剥脱术或支架植入术，可有效降低缺血性卒中的再发风险，对改善CWI的预后具有重要的临床价值。“,”Watershed infarction,also known as marginal zone infarction,junctional zone infarction,is a special type of cerebral infarction. The causes and pathogenesis is complicated,vascular stenosis lesions as one of the important pathogenesis of cerebral infarction has attracted widespread attention. Scholars reported that in different types of patients with cerebral washed infarction,we can find the middle cerebral artery or in-ternal carotid artery stenosis and other intracranial vascular lesions through the vascular examination technolo-gy,such as CDS,TCD and MRA,etc. In addition,atherosclerotic plaque stability is also an important risk fac-tor involved in the formation of cerebral watershed infarction. Prognosis is relatively good for watershed infarc-tion,we take different treatment measures for different causes. For the existence of vascular stenosis or unsta-ble atherosclerotic plaque in patients with watershed infarction,early intravascular treatment should be taken, if necessary,vascular endarterectomy or stent implantation,in order to effectively reduce the recurrence of is-chemic stroke risk and has important clinical value to improve the prognosis of cerebral watershed infarction.