The design of the second phase of the National Library embodies the concept of people-oriented and service-oriented: the first impression of the new library in the second phase is its horizontal posture and simple style, and its giant steel roof is like a book, supported by people on a base full of rich China culture; An unsupported escalator with a length of 28 meters and a height of 13.45 meters goes straight from the second floor to the fourth floor, which is convenient for readers to enter and leave the reading room; Sikuquanshu, one of the four academic collections of the National Library, is placed between the landmark atrium and the reader's reading area, extending from the basement to the ground floor, and readers can enjoy it from any angle. Its quaint and sturdy bookshelves and boxes present architectural beauty because of their rhythmic arrangement.

At the same time, wireless internet technology covers the whole library, and readers can use their portable computers to obtain the latest network information at any time; The 560 computers in the library are distributed in the electronic reading room and other areas, which makes it convenient for readers to consult more than one million electronic books on the Internet and the library LAN. Set up two automatic book returning machines at the east gate of the old library and the entrance of the new library to meet the readers' demand of returning books 24 hours a day; Radio frequency identification technology (RFID) and the current shelf information of books in the reading area prompted to readers through OPAC (Online Public Catalog Query System) can realize self-help borrowing and returning books. In particular, visually impaired people can obtain the same digital information resources as normal readers through voice-activated computers and "digital libraries for the blind".

In addition, the exterior wall and ceiling of the second-phase new library are all decorated with glass curtain walls, and the reading room is illuminated by the light from the glass ceiling and more than 30 lighting windows, which greatly saves the lighting electricity and can improve the illumination by more than 50% compared with the old library. Building automatic control system monitors and controls cold and hot water system, air conditioning system, ventilation system, environmental monitoring system and other systems and equipment, so as to achieve the purpose of saving electricity, saving manpower, prolonging the service life of equipment and reducing the operating cost of buildings.