Abstract: Constructing China's independent Olympic legacy knowledge system serves not only an academic response to "managing and utilizing the legacy of Beijing 2022 Olympic Winter Games", but also an inevitable requirement for constructing a leading sporting nation in China. This paper discusses the necessity of the construction from three perspectives: the importance of Olympic legacy, the solid foundation of Olympic legacy research in China and the key initiatives for improving China's international sports discourse power. It explores the overall framework for constructing this knowledge system from four dimensions: planning, resource, utilization and evaluation. It proposes pathways for constructing the system: to establish Olympic Legacy Science as an independent discipline; to promote mutual reinforcement between theory and practice; to build an interdisciplinary community in the Olympic legacy field to promote cross-disciplinary research; and to focus on local contexts while tracing historical roots, and engage in international dialogue by integrating both domestic and global perspectives.