Abstract: The flue gas discharged after natural gas combustion contains a large amount of waste heat, and the compressor will also discharge a large amount of high-temperature flue gas during operation, which not only directly causes the waste of thermal energy resources, but also pollutes the atmospheric environment. How to effectively utilize the waste heat of flue gas from natural gas compressor unit is a topic of great concern and must be paid attention to by natural gas companies. Based on this, in this paper the utilization of flue gas waste heat of natural gas compressor unit in compressor station is analyzed and studied, for reference.