Abstract: With accelerating urbanization and rising living standards, as a critical component of public space, parks have become increasingly important. In recent years, driven by the advancement of urban open space theory and the emergence of new technologies, the design and evaluation of parks have progressively moved beyond the constraints of meeting singular functional indicators. Research on park vitality has emerged as a critical issue in urban planning and landscape design, yet a unified consensus on the theoretical framework and assessment methodologies has not been established. This study systematically reviews the progress in park vitality research, including its definition, measurement methods and influencing factors. It proposes a triadic interaction framework of “residents-parks-built environment” to elucidate the mechanisms underlying the formation of park vitality. Additionally, it explores preliminary methodologies for assessing park vitality. Future studies should emphasize interdisciplinary integration, optimize multi-source data analysis methods, and enhance the precision and equity of park planning, thereby promoting parks as more effective to the well-being of residents.