Axial　compression　tests　and　numerically　investigates　were　presented　to　investigate　the　behavior　of　circular　winding　concrete　filled　GFRP　tubular　columns　with　inner　various　section　shapes　of　pultruded　GFRP　including　angle　section　pultruded　GFRP　(LG-CFGT),　channel　section　pultruded　GFRP　(CG-CFGT)　and　I　section　pultruded　GFRP　(IG-CFGT).　A　total　of　72　columns　including　three　groups　of　24　LG-CFGT　columns,　24　CG-CFGT　columns　and　24　IG-CFGT　columns　with　different　concrete　strength,　different　winding　GFRP　tubular　thickness　and　different　column　heights　were　tested.　The　failure　mode,　ultimate　capacity,　ductility,　and　stiffness　of　columns　were　mainly　analyzed.　Besides,　strain　development　of　the　three　groups＇　columns　during　the　test　was　investigated　according　to　the　strain　measurement　of　eight　columns.　Based　on　mechanical　mode　and　test　results　of　core　concrete　being　confined　with　GFRP　tube,　the　calculate　formula　was　presented　in　this　study　to　predict　the　ultimate　capacity　of　various　section　GFRP　profile　strengthening　concrete-filled　GFRP　tubular　columns.　The　calculated　results　were　greatly　consistent　with　the　test　results.　In　addition,　the　finite　element　model　was　proposed　in　this　study,　and　was　validated　by　comparing　with　the　test　results.