[Objective] Identifying the spatial correlation network characteristics of net carbon sinks in the Yangtze River Economic Belt under the background of carbon peaking and carbon neutrality plays an important role in promoting the synergy of carbon emission reduction in the Yangtze River Economic Belt and realizing regional coordinated development. [Method] The modified gravity model was used to construct the spatial correlation network of net carbon sinks in the Yangtze River Economic Belt at the municipal scale, and the characteristics of the spatial correlation network were identified by using the social network analysis method, and the driving factors of the spatial correlation network of net carbon sinks were identified by the QAP model. [Results] (1) The net carbon sink in the Yangtze River Economic Belt has significant spatial correlation characteristics, and generally presents an intertwined network pattern of "dense in the east and sparse in the west", and forms a network pattern with "Chongqing" and "Shanghai" as the dual cores(2) The correlation of the net carbon sink spatial network in the Yangtze River Economic Belt is mainly affected by the differences in economic development level, industrial structure upgrading, energy consumption intensity and different land use structures, while the impact of urbanization level and grain yield difference is not significant. [Conclusion] To achieve the coordinated development of the Yangtze River Economic Belt and regional coordinated emission reduction, it is necessary to fully consider the spatial correlation of net carbon sinks of each city, as well as the status and role of each city in the spatial correlation network, so as to fully realize the complementary advantages of each city and maximize the benefits of emission reduction. At the same time, cities need to actively promote the upgrading of industrial structure,increase the research and development and innovation of emission reduction technologies, improve energy efficiency, and optimize land use structure to achieve carbon reduction and increase sinks.