Traditional waste incineration power plants have the disadvantages of low energy efficiency, large investment and high cost of environmental protection, making it difficult to operate in market and depending on financial subsidies for long-term survival. At the sametime, there are large number of coal-fired generating units exist in China, which have large scale, high parameters, new age, and environmental protection facilities.Due to the limitations of the dual-carbon policy, a huge waste of fixed assets has been caused because of theinability to operate at full capacity for a long time. Therefore, the development of coal-fired coupled waste incineration power generationtechnology can make full use of the existing coal-fired units to cooperatively treat waste, improve the efficiency of waste power generation,reduce the cost of waste power generation, reduce the investment in engineering equipment, and reduce the carbon emissions of coal-firedunits. The process of the coal power plant coupled with waste incineration system was simulated to compare with the coal-fired power generation system, and the power generation efficiency, economy and environmental performances as well as the carbon emission throughoutthe entire power production process were calculated and evaluated. The results show that the power generation efficiency of the coal fired generating unit only decreases by 0.95% after the waste coupling transformation. The economic performance is better, the internalrate of return increases from 18.72% to 21.89%, and the investment return period decreases from 9.72 years to 9.12 years, while the environmental loss cost increases after coupling transformation. But the carbon emission of the power production in the system is reduced by14.02 g/ kWh (calculated by CO2)after the renovation. The results show that the coal-fired coupled waste incineration power system istechnically and economically feasible.