“可及性”是一个自卫生服务领域发展而来、从公众感知视角对公共服务进行绩效评价效果的新体系。文章首先概述了可及性概念提出、发展及内涵，以文献综述的视角介绍了公共服务可及性评价的已有卫生服务评价、公民教育评价及公共文化服务评价等研究框架，最后在阐述图书馆服务可及性评价的学理依据基础上，从可获得性、可达性、可接受性和可适应性四个维度构建了图书馆服务可及性评价的框架指标。

 "Accessibility" is a new system that develops from the field of health services, it performance evaluates the effectiveness of public services from the perspective of public perception. The article first outlines the concept of accessibility, its development, and its connotation. It uses the method of literature review to introduce the research frameworks of the existing health service evaluation, civic education evaluation, and public cultural service evaluation. Finally, it constructes  the indicators framework of evaluation of library service accessibility from  four dimensions of availability, accessibility, acceptability and adaptability, which based on the explanation of the theoretical basis for the evaluation of library service accessibility.