From the perspective of waste heat power generation, the distribution of the waste heat resources of 2×150m² sinter machine and the waste heat recovery of hot flue gas were discussed. According to the characteristics of sintering process and production instability, and based on changing waste heat collection scheme of circular cooler, the waste heat power generation is realized by utilizing the waste gas of sintering collecting main and flue gas of circular cooler, the steam produced by the boiler of the collecting main enters the steam turbine generator after it is reheated by the waste heat boiler of circular cooler, cooperative control is realized by gas supply of multi-heat source, and reliable operation of power generation system is realized. After adoption of the new scheme the external power supply can be increased by about 9%, the total investment decreases, and the payback period of project investment is also shortened. From the angle of process design, equipment selection and parameter determination are analyzed in detail for the peer reference.