The library of Nanjing University of Posts and Telecommunications adheres to the service tenet of "taking quality service as the leading factor". Since 1987, the closed library has been upgraded to a modern library, and all the service modes of open-shelf book selection, reading and borrowing have been implemented. Among them, Sanpailou Campus Library has implemented a fully open management mode, Xianlin Campus Library has implemented an integrated management mode of borrowing and lending, and it has also realized the mode of networking between the library and nine departments, and the management of reference room documents and library documents on the same platform.

The library network is connected with the campus network, which provides various database resources and comprehensive information of the library on the Internet, and provides 24-hour uninterrupted electronic resource service. The library is open for 9 1.5 hours every week, and the library between the two campuses can be borrowed and returned; Provide readers with services such as book borrowing, original text retrieval outside the library, and interlibrary loan of universities in Jiangsu Province; Data replication; Tape and disk copies; Audio-visual projection and other services. And take various ways to strengthen the contact with readers, such as co-construction with departments and classes, joint activities of student associations and irregular discussions and exchanges with readers; Carry out reader consultation, online new book notification, online appointment renewal, virtual consultation, etc. In 2006, the Sci-tech Novelty Retrieval Center of Nanjing University of Posts and Telecommunications was established to provide readers with services such as topic selection of key disciplines, document delivery, and sci-tech novelty retrieval, and continuously expand the service space and improve the service level.