Abstract: Carbon capture is one of the key technologies for deep emission reduction in the integrated energy system of industrial parks to achieve the dual carbon goals. To enhance the energy utilization rate after the configuration of carbon capture equipment and tap the thermal energy "source-load" potential, an optimal configuration method for the carbon capture-electrothermal hybrid energy storage collaborative system of the integrated energy system of industrial parks is proposed.Firstly, the study designs the basic architecture of the carbon capture and electrothermal hybrid energy storage collaborative system and analyzes its operating principle. Secondly, a bi-level r optimal configuration model for carbon capture and electrothermal hybrid energy storage is established. The upper-layer model configures the capacities of carbon capture equipment and electrothermal hybrid energy storage based on the lowest system investment cost. The lower-layer model starts from energy interaction, operation and maintenance, carbon revenue, and the penalty cost for wind and solar power curtailment, aiming to minimize the daily operating cost of the park's integrated energy system, and optimizes the output of equipment within the park system. The model also comprehensively considers the thermal balance constraints of the system and each piece of equipment. The simulation results show that, under the condition of planning the same scale of carbon capture capacity, compared with the scenario of only configuring electric energy storage, the scenario of adding electrothermal hybrid energy storage significantly reduces the carbon emissions of the power system, significantly improves the thermal energy utilization efficiency, and reduces the total daily operating cost of the system by 5.81%. By configuring carbon capture equipment and installing electrothermal hybrid energy storage at the same time, the thermal energy dispatching potential of the carbon capture equipment can be effectively tapped improving the working efficiency of the carbon capture equipment during low-load periods. This not only reduces the carbon emissions of the park's integrated energy system but also enhances the economic operation of the system.