Abstract: Aiming at problems of multi-energy coupling and zero-carbon operation of park integrated energy systems, this paper proposes a zero-carbon economic dispatch strategy of integrated energy system of the park considering carbon capture and power-to-gas.Firstly, we analyze the architecture of the park integrated energy system to establish a comprehensive model that takes into account carbon capture and P2G coupled with electricity, heat, cooling and gas. Secondly, we conduct a comprehensive calculation of the park′s ecological carbon sinks, energy production carbon sources, and other related factors. Zero-carbon indicators were proposed for the system, and an economic dispatch model was developed to maximize its economic benefits. Finally, based on three scenarios: economic dispatch ignoring carbon neutrality constraints, economic dispatch considering carbon neutrality constraints and economic dispatch considering CCUS-P2G joint operation, The improved particle swarm algorithm is used to solve the model combining time-of-use electricity prices. The results verify the effectiveness of the model and method proposed in this paper. Economic dispatch considering CCUS-P2G joint operation can improve clean energy absorption rates, reduce operating costs of the system, and achieve carbon neutrality in the park.