本文基于“双创”背景阐述公共图书馆在现代服务中的机遇与挑战,认为开展延伸服务是公共图书馆职能的体现。通过对各地公共图书馆开展延伸服务案例的分析,梳理了推广延伸服务成功的因素,以期为公共图书馆今后更好地开展延伸服务提供参考。 Based on the background of “double creation ”, this article expounds the opportunities and challenges of public libraries in modern service, and thinks that extending service is the embodiment of public library functions. Through the analysis of extending service cases in public libraries around the world, the paper explores the factors that promote the success of extension services in order to provide a reference for public libraries to better extend services in the future.