目前对于血管性认知损害（vascular cognitive impairment，VCI）的诊断及分类标准尚未达成共识，且已发布的各种VCI 诊断标准之间缺乏可比性，因此影响了诊断效率，继而影响到患病率的估计、相关研究的开展以及VCI 的治疗。为此，来自27 个国家的122 名专家（81% 为学术研究人员）采用德尔菲法参与在线调查，通过回顾已经提出的VCI 相关概念以建立新的专家共识，如果支持率达67% 即认为达成共识，并于2017 年发布了《血管性认知损害分类共识研究（The Vascular Impairment of Cognition Classification Consensus Study，VICCCS）》。VICCCS 重新定义了VCI 概念模型，包括轻型VCI 和重型VCI 及其亚型以及新的VCI 相关标准化术语，旨在解决当前对于VCI 的认识差异。同时，VICCCS 提出了未来潜在的研究课题。VICCCS 的制订及发布为VCI 研究工作提供了诊断及分类标准，为今后开展更大样本量的协作研究奠定了基础。

At present, there is no consensus on the criteria for diagnosis and classification of vascular cognitive impairment (VCI), and there is a lack of comparability among the published diagnostic criteria for VCI, which affects the efficiency of diagnosis, and then affects the estimation of prevalence, the development of related research and the treatment of VCI. For that reason, 122 participants (81% of them were academic researchers) from 27 countries participated in the online survey using Delphi method. They reviewed the relevant concepts of VCI to develop a new consensus among experts. If the agreement rate reached 67%, that was to say, the consensus was formed. In 2017, the Vascular Impairment of Cognition Classification Consensus Study (VICCCS) was released. VICCCS redefines the conceptual model of VCI, including the severity of VCI and the discrimination of subtypes, as well as new VCI-related standardized terms, in order to solve the differences in understanding of VCI. At the same time, VICCCS has proposed potential research topics in the future. The development and release of VICCCS provide diagnostic and classification criteria for VCI research, and lay a foundation for collaborative research with larger sample size in the future.