清华大学图书馆学科服务:20年回顾与未来展望

目的/意义]对清华大学图书馆学科馆员制度的建立和学科服务的开展情况进行系统总结，为学术图书馆开展学科服务提供借鉴。方法/过程]通过文献和网络调研，回顾清华大学图书馆设立学科馆员制度的缘起，梳理20年来学科服务内容的拓展情况以及学科服务管理模式的优化过程，并对学科服务发展中遇到的瓶颈进行讨论和展望。结果/结论] 20年的实践证明，学科服务是大学图书馆服务转型的有力举措，学科服务内容不断拓展的同时也必将带来服务内容的规范化要求；未来，可持续的高素质学科馆员队伍、学科服务绩效的考核以及对用户需求的调研将成为突破学科服务瓶颈、提高服务成效的重点和难点。

Subject Librarian Service in Tsinghua University Library: Twenty Years' Review and Future Prospects

Purpose/significance] This paper systematically summarizes the establishment of subject librarian system and the development of subject services in Tsinghua University Library, providing reference for academic libraries subject service.Method/process] Through literature and network research, this paper reviews the origin of the establishment of subject librarian system in Tsinghua University Library, combs the continuous expansion of subject service content and the continuous optimization of subject service management mode in the past 20 years, and discusses the bottlenecks encountered in the development of subject service and prospects for the future.Result/conclusion] The practice of 20 years has proved that subject service is a powerful measure of service transformation in university libraries, and the continuous expansion of subject service content will also bring the standardization of service content. In the future, sustainable high-quality subject librarians, subject service performance evaluation and user needs survey will become the key and difficult points to break through the bottleneck of subject service and improve service effectiveness.