Energy　subway　station　is　a　new　type　of　energy　underground　structure　that　takes　advantage　of　geothermal　energy　to　control　the　temperature　of　subway　station.　In　this　paper,　the　energy　metro　station　was　selected　as　the　research　object,　the　construction　process　was　divided　into　sections　based　on　the　construction　characteristics,　and　the　carbon　emission　calculation　method　of　the　embodied　stage　of　the　energy　subway　station　considering　the　construction　of　the　ground　source　heat　pump　salt　water　pipe　system　was　established　based　on　the　emission　factor　method.　Taking　a　subway　station　in　Beijing　as　an　example,　the　carbon　emissions　in　the　embodied　stage　after　adding　ground　source　heat　pump　brine　pipe　system　to　the　subway　station　were　calculated,　and　finally　the　results　were　analyzed　and　verified.　At　present,　there　is　still　a　lack　of　detailed　calculation　method　for　carbon　emissions　of　underground　structures,　the　establishment　of　which　can　not　only　provide　theoretical　and　calculation　reference　for　similar　engineering　carbon　emission　accounting　work,　but　also　meet　the　development　needs　of　infrastructure　construction　industry,　which　is　of　great　significance　to　promote　the　establishment　and　improvement　of　China蒺s　carbon　emission　accounting　system.　©　2025　Beijing　University　of　Technology.　All　rights　reserved.