Abstract: By using the literature analysis software, 431 articles related to urban green space carbon sink research in CNKI database were quantitatively analyzed. The research of green space carbon sink could be divided into three research stages: the exploration stage of green space carbon sink function, the development and practice stage of green space carbon sink, and the optimization stage of green space carbon sink efficiency. The research progress at each stage was reviewed from three aspects: theoretical methods, influencing factors and benefit evaluation. Finally, three suggestions were put forward for the study of carbon sinks in urban green areas: building a systematic and comprehensive theoretical and methodological framework from a multidisciplinary perspective, clarifying the value of influencing factors with the goal of maximizing green space carbon sink benefits, and establishing a differentiated evaluation system for continuous dynamic monitoring.