Low-carbon optimization operation of integrated energy system (IES) can reduce system carbon emissions and total operating costs, which is of great importance for the realization of dual-carbon strategy. However, existing studies of IES optimization strategies have not fully considered the impact of introducing CHP (CHP) generation and carbon capture power plants (CCPP) on system operation. In this paper, a low carbon optimization operation strategy for IES considering CHP generation and carbon CCPP is proposed, and a low carbon optimization nonlinear programming model for IES is established, and the nonlinear model can be converted into a mixed integer linear programming (MILP) model by binary expansion method (BEM). In the example, two control scenarios were set to verify the impact of CHP and CCPP on the operation results. The results show that the combined consideration of CHP generation and CCPP can effectively reduce the total operation cost and carbon emissions, and provide a new method and approach for the low-carbon optimization operation strategy of IES.