Fiber-reinforced　polymer　(FRP)-confined　recycled　aggregate　concrete-filled　steel　tube　(RACFT)　columns　significantly　mitigate　the　defects　of　RAC,　and　hence　can　be　potentially　used　in　structural　engineering,　e.g.,　column　and　pile.　However,　the　existing　studies　on　the　behavior　of　recycled　aggregate　concrete-filled　steel　tube　(RACFT)　columns　strengthened　by　the　fiber-reinforced　polymer　(FRP)　are　scarce,　especially　those　on　square　specimens.　This　paper　presents　an　experimental　study　to　investigate　the　compressive　behaviors　of　FRP-confined　RACFT　square　columns.　The　results　in　this　paper　suggest　that　the　FRP-confined　RACFT　column　with　a　higher　RA　replacement　ratio　has　a　smaller　axial　strength　of　the　specimen,　but　tends　to　exhibit　more　ductile　behavior.　The　specimen　confined　by　a　thicker　FRP　tends　to　have　a　higher　axial　strength　and　larger　ultimate　strain　due　to　the　better　confinement　effect　of　thicker　FRP　on　the　RACFT　column.　Additionally,　compared　with　the　partial　wrapping　scheme,　the　full　wrapping　scheme　mainly　improves　the　ductile　behavior　of　the　RACFT　columns　rather　than　their　axial　strengths.　Based　on　the　test　results,　a　design　model　of　the　axial　load　bearing　capacity　for　FRP-confined　RACFT　columns　is　proposed,　which　is　found　to　predict　the　results　of　experimental　tests　accurately.