5G era, society and a number of industries will carry out profound self-transformation to adapt to the development of society. 5G technology will affect the library's information organization, information services and other fields, 5G technology intelligent application scene, for the 5G era of library reform and Development provides a new logical perspective. Exploring 5G use cases and application scenarios in library field, migrating more library services taking cloud computing as the platform, strengthening immersive experience and intelligent service, perfecting library data management strategy is the library reform strategy in 5G era.