The coming of the 5G era provides technical support for the intelligent service of library, and the library information service which conforms to 5G technology is bound to face the revolution. Based on the overview of 5G technology and application, and the impact of 5G technology on social information services, the article focuses on the analysis of intelligence service scenarios of libraries, which based on 5G technology. It holds that there are six application scenarios of intelligence services, which including virtual/augmented reality (VR/AR), ultra-high definition video, intelligent reading, smart venues, intelligent security, personal AI equipment.