The urbanized region is a major source of CO2 and other greenhouse gases. Urban green space is the only element in the city to increase carbon sequestration directly and reduce emission indirectly. Monitoring the carbon sequestration of urban green space accurately and analyzing its influencing factors, can intuitively reflect the carbon neutralization of urban green spaces, which is of great significance to enhance carbon sequestration function of urban green space and promote urban low-carbon development. In this paper, the various methods of carbon sinks measurement and monitoring in urban green space are sorted out, mainly including sample inventory, photosynthetic rate integration, micrometeorology evaluation and remote sensing estimation. This paper analyzes the previous research results of carbon sink monitoring on different scales and different types of urban green space, and summarizes the applicable scale, advantages and disadvantages of these methods. For the characteristics of urban green space, this study put forward the framework of measuring and monitoring urban green space carbon sinks with different scales and different methods to promote the precise assessment of urban green space carbon sinks, and provide theoretical and technical support for the implementation of urban refined management and carbon neutrality.