Fiber　reinforced　polymer　(FRP),　as　a　novel　type　of　composite　material,　has　been　extensively　employed　in　structural　strengthening　and　composite　structures.　The　FRP　tube-confined　alkali-activated　slag　lightweight　aggregate　concrete　column　(FRP-AASLAC)　can　effectively　improve　the　utilization　rate　of　slag,　reduce　carbon　emissions,　reduce　structural　self-weight,　and　improve　structural　ductility.　Therefore,　the　axial　compressive　properties　of　FRP-AASLAC　were　studied　in　this　paper.　The　influences　of　the　type　of　FRP,　FRP　thickness　and　the　content　of　lightweight　aggregate　on　the　failure　modes,　bearing　capacities,　deformation　properties　and　constitutive　relationships　of　FRP-AASLAC　were　revealed.　The　results　indicate　that　the　constitutive　relationships　of　FRP-AASLAC　show　double　broken　line　patterns　without　obvious　softening　sections.　The　restraining　effect　of　FRP　on　lightweight　aggregate　concrete　is　higher　than　that　on　ordinary　concrete　as　lightweight　aggregate　concrete　has　lower　strength　and　more　easily　undergoes　lateral　expansion　under　external　loads.　Models　for　compressive　strength,　peak　compressive　strain　and　constitutive　relationship　for　FRP-AASLAC　are　proposed.