[Purpose/significance] Researching and exploring the reasonable renovation or expansion design of the existing library buildings to make them fit the operation mode of the smart libraries. [Method/process] Starting from the influencing factors and architectural characteristics of libraries in different times, this paper expounded the development trends of library buildings. Taking the three times of renovation or expansion of Peking University Library from 1996 to 1998, 2003 to 2005 and 2014 to 2020 as examples, this paper analyzed its plane combination and studied the effective architectural design techniques of renovation or expansion. [Result/conclusion] The architectural entities of the smart libraries will not disappear, but the internal space will be redistributed.

[Purpose/significance] This paper discusses the concept, historical evolution, evaluation and design of library smart space construction, and looks forward to the bright future of library smart space services. [Method/process] The paper reviewed the exploration process of library space services, carried out concept definition and specific analysis of intelligence factors in the construction and services of physical space, theme space and knowledge space, and introduced ABCDE (artificial intelligence, blockchain, cloud computing, big data and extended reality) which had played a key supporting role behind it. [Result/conclusion] Through case analysis, the paper puts forward the objective, vision, demand, design, implementation and evaluation of library smart space construction, and looks forward to the exciting prospect of library smart space services in the future.

[Purpose/significance] To explore and discuss the space layout reconstruction of university libraries from the perspective of all-round education. [Method/process] Through the analysis of the demise of the library, the paper clarified the existential value of the physical library as place, analyzed the types of space and the changes of the design concept of university libraries, emphasized the educational function of library space as place, and took the space reconstruction of Peking University Library as an example to demonstrate the power of education of university library as place. [Result/conclusion] Teaching and educating students is the basic function of university education, serving students in teaching and learning is the major responsibility of a library. It is an important issue for university libraries needs to explore in the digital era to reconstruct library space and make it a powerful educational force.

[Purpose/significance] The advent of intelligent era spawned by Big Data and Artifical Intelligence prompts serious re-examination of the changes in library space functions, resources and innovative service trends, hoping to provide references for future development planning of library space services. [Method/process] This paper researched on the changes of library user roles, repositioning library functions, and technological innovation integration development under the new situation, and analyzed the future development trend and the involved important supporting technologies of library space function services based on the three elements of spaces, resources and services. [Result/conclusion] The library has undergone a transformation and upgrading from a traditional resource-based center to a knowledge center characterized by learning and exchanges, and has developed into a complex functional space supporting diversified service models and inclusive cultural facilities. The high-density automatic storage library, innovative service space reconstruction, multi-modal resource association and integration, immersive reading, etc. may become the reform focus of library space function innovation.