[目的/意义] “双一流”建设背景下，服务ESI（Essential Science Indicators，基本科学指标）学科建设是高校图书馆的主要任务之一，有助于充分发挥图书馆的资源与情报服务优势，延伸和深化图书馆学科服务，为ESI学科建设提供强有力支持，助推学校ESI学科的持续快速发展，推动图书馆服务的转型升级。[方法/过程] 在分析图书馆服务ESI学科建设优势的基础上，根据现有文献和服务实践，总结、归纳图书馆服务ESI学科建设的主要内容，提出针对性的服务策略建议。[结果/结论] 图书馆能够为学校ESI学科建设提供编制ESI期刊投稿指南、组织整理和计量分析ESI论文、建设ESI学科文献信息资源、评估ESI学科竞争力、提供决策支持和政策建议等服务，可以通过采取建立ESI学科服务平台、设计ESI学科服务模式、打造ESI学科服务团队、构建ESI学科服务体系、创建ESI学科服务品牌等措施，确立图书馆在服务学校ESI学科建设中的核心主体地位。

[Purpose/significance]Under the background of "Double First-class" construction, ESI discipline service is one of the main tasks of university libraries. It contributes to give full play to library advantages of resources and information service, also promote extension and deepening of subject service. With providing strong support for ESI discipline construction, it is helpful to expedite the sustainable and rapid development of ESI discipline as well as promote the transformation and upgrading of library service.[Method/process] Based on advantages analysis of ESI discipline service of university libraries, the paper summarizes the main content of ESI discipline service according to the existing literature and service practice,and puts forward targeted service suggestions.[Result/conclusion] University libraries can provide various services for ESI discipline construction such as for drawing up ESI journal submission guidelines,organizing and analyzing ESI academic paper, constructing ESI subject literature information resources, evaluating ESI discipline competitiveness, providing decision support and policy suggestions, and may take measures such as establishing ESI discipline service platform, designing service mode, building service team, constructing service system, setting up service brand so as to establish the core body status of library in ESI discipline construction.