Abstract: To evaluate in scientific way the thermodynamic economy of the carbon capture power plant,this paper takes 600 MW unit as researching object and establishes the exergy cost and thermo-economics model by considering its thermodynamic properties and economics features. The model is established based on the structural theory of thermo-economics. The space-time distribution of exergy cost was quantitatively analysed,and also the thermo-economic cost of each unit of carbon capture power plant. Results indicated that exergy costs and thermo-economic costs of carbon capture power plant are higher than that of the old power plant. The main factors affecting exergy costs of carbon capture power plant were exergy costs of fuel. Thermo-economic costs of fuel and the costs of thermoeconomic investment are the principal factors that cause the increasing of the carbon capture power plant’s thermo-economic costs.