In view of the current situation of large amount of waste heat loss and waste in the air compressor of Yunjialing Mine, a retrofit scheme for heat energy recovery was proposed, which used the cold water of the circulating pipeline to exchange heat with the heat generated by the air compressor to realize heat energy recovery and utilization, which saved the need. The energy costs required for the production of hot water in the mine reduced the high-temperature operation of the air compressor, saving energy and environmental protection.