Air　conditioning　system　(AC)　contributes　significantly　to　the　energy　consumption　of　underground　metros.　In　China,　most　metro　stations　are　designed　with　water-cooling　centralized　air　conditioning　(WC-AC)　system,　it　has　been　found　that　several　serious　problems　are　brought　by　this　conventional　system,　such　as　large　space　occupying,　water　leaking,　cooling　tower　noise　and　low　system　efficiency.　In　order　to　solve　these　problems,　a　novel　energy-efficient　AC　system　incorporating　an　independent　evaporative　condenser　(EC)　has　been　proposed　and　installed　at　Eutong　metro　station　in　Beijing,　China.　A　series　of　pilot　measurements　were　conducted　to　analyze　the　cooling　performance　and　energy　consumption　of　this　novel　EC-AC　system.　During　the　testing　period,　the　average　refrigeration　efficiency　of　COP,　SCOP　and　ACOP　in　A　and　B　side　is　up　to　3.8/3.9,　3.4/3.4　and　2.5/2.3.　At　the　same　time,　some　operation　problems　such　as　unbalanced　working　condition　have　been　identified　during　measurement.　The　research　indicates　that　such　EC-AC　system　could　be　a　feasible　solution　to　enhance　the　energy　efficiency　and　reduce　the　operational　costs　and　carbon　emission　in　metro　stations.