Abstract: In order to solve to the contradiction between the thermal requirements increased continuously in coal mine and the low thermal utilization of the energy conversion process in the power generation plant, a special heat pump experiment measuring platform was established to the study on the simulation experiment of wa ste heat recovery operation from the cooling water of the auxiliaries in the power generation plant.With the experiments, the cooling water quantity, water temperature, potential energy and other parameters of the auxiliaries in the power generation plant were mastered, the operation performances of the cooling water heat recovery of the auxiliaries in the power generation plant were measured and those provided the accurate theoretical basis to the industrial application of the cooling water heat reco very of the auxiliaries in the power generation plant.The study showed that the indoor temperature at the operation end of the simulation reached at 335 °C, the bath w ater temperature reached at 4550 °C and the temperature at the heat ventilation outlet reached at 5055 °C.All those could meet the mine bath hot water, the heating sup ply of the buildings in winter and other heating requirements.