Abstract: A high efficiency and economic refuse incineration power generation system capable of stable and continuous refuse incineration operation which can adapt to fluctuation in calorific values in the refuse incinerator has been provided, wherein the same system comprises the refuse incinerator having the heat exchanger through which the medium flows, the steam turbine which is coupled to the generator, and the refrigerator which supplies cooling water to the condenser, and wherein the medium discharged from the steam turbine is circulated to the boiler via the condenser where the medium is condensed to a condensate by enhanced cooling, a portion of the vapor generated in the refuse incinerator is branched in the upper stream of the steam turbine to be supplied to the refrigerator, and the working medium discharged from the refrigerator is caused to converge with the medium flow discharged from the condenser.