Abstract: According to the modern library concept and trends of openness, wisdom, inclusiveness and sharing, Shanghai Library investigated the FOLIO open source library service platform, and created Yunhan, the Chinese version of FOLIO. With the open technology and the concept of “platform + application + community”, Yunhan library service platform is constructed in the Shanghai Library East to support intelligent service. The platform is self-hosted, scalable, cloud-native and observable, covering the unified management and discovery of library resources, full-scene services, and supporting a wide range of smart service scenarios. The paper discusses the construction, mentality, competitiveness, and sustainability for intelligent library service platform. The exploration of the Yunhan library
service platform in Shanghai Library is of great significance to the construction of intelligent library in
China.