高校图书馆学科馆员制打破了按文献类型来配置馆员的做法,是一种以大学学科为对象而建立的学科高级专门服务人员对口服务模式。本文介绍了国内外学科馆员的发展渊源与时代背景,简要论述了学科馆员的内涵和职能。在此基础上,提出了做好学科馆员服务工作需要了解的关键点。 Subject librarian system in university library has broken the practice of configuring librarians according to the types of documents, and is a counterpart service mode of subject senior specialized service personnel based on university subjects. This paper introduces the development sources and background of subject librarians at home and abroad, briefly discusses the content and function of subject librarians. On this basis, it puts forward the key points that need to be understood to do a good job of the subject librarian service.