Abstract: In order to realize efficient energy utilization and reduce system carbon emissions, an optimal dispatching model for integrated energy systems is proposed, which takes into account ladder-type carbon trading and integrated demand response. The first step involves setting up a multi-energy complementary optimal dispatching model, aiming to enhance the energy utilization rate. Secondly, the integrated demand and response is modeled, with demand responses of incentive, price and alternative taken into account. The potential of the demand side is excavated to realize load transfer in time and between different types. Finally, the ladder-type carbon trading mechanism is introduced, with both low carbon and economy taken into consideration. The analysis on an instance indicates that both the system carbon emissions and the integrated energy system operating costs can be effectively reduced under the carbon marketing mechanism considering integrated demand response.