Abstract: 【Purpose/significance】The exploration of intelligent information service modes and mechanisms provides a theoretical paradigm and practical model for information resource management. This serves to innovate new quality productivity and improve the quality and efficiency of social development.【Methods/processes】The evolution of intelligent information services in complex spatial and temporal domains, the intersection of multi-source data, and the iteration of multiple technologies have been comprehensively ex⁃ amined using systematic research approaches. Theoretical core, organizational structure, and realization paths have been systemati⁃ cally elaborated, laying a solid foundation for both theoretical and practical innovations.【Results/conclusions】Focusing on the devel⁃ opment of intelligent information services driven by new productivity, such as big data, artificial intelligence, and the Internet of Things, this study emphasizes the technical points and development directions in areas like multimedia information retrieval, informa⁃ tion recommendation, knowledge quizzes, blockchain information security, and system construction and scenario application. This pro⁃ vides theoretical and practical support for addressing the problems of information overload and information silos.【Innovation/limita⁃ tion】Important breakthroughs have been made in expanding the research perspectives of intelligent information services and con⁃ structing a three-dimensional theoretical system, which holds significant reference value for guiding the development of China's infor⁃ mation resource management disciplines and leading industrial changes.