The　controllers　of　various　forms　and　functions　in　HVAC　system　are　essential　for　the　efficient　operation　of　the　system.　With　the　increasing　intelligence　level　of　HVAC　equipment,　the　test　of　controllers　has　become　more　demanding,　and　traditional　test　methods　cannot　meet　the　current　needs　of　controller　test.　To　improve　the　efficiency　of　controller　development,　this　paper　proposes　a　virtual-reality　combined　controller　test　method　to　improve　test　efficiency　and　ensure　the　applicability　of　the　test　method.　Firstly,　a　development　method　for　a　Virtual-Reality　Combined　Simulation　Laboratory　(VRCSL)　for　HVAC　controller　is　presented.　Secondly,　a　VRCSL　is　constructed　using　the　fan　coil　system　as　an　example.　Finally,　the　applicability　and　economy　of　the　VRCSL　are　analysis.　The　results　show　that　the　VRCSL　can　change　equipment　parameters　arbitrarily　based　on　equipment　samples　to　complete　more　test　tasks.　Compared　with　actual　laboratory　test,　the　VRCSL　has　an　energy-saving　rate　of　95.8%,　and　the　VRCSL　can　adjust　the　test　speed　with　the　fastest　speed　of　30　times.　The　VRCSL　can　also　apply　meteorological　data　from　multiple　regions　around　the　world,　improving　the　comprehensiveness　of　test　conditions.　Therefore,　the　VRCSL　can　overcome　the　drawbacks　of　high　energy　consumption,　low　efficiency,　and　limited　test　conditions　in　actual　laboratories,　and　greatly　improve　the　test　efficiency.