Due　to　the　fact　that　steel　reinforcement　is　vulnerable　to　corrosion,　FRP　bars　with　light　weight,　high　strength,　and　excellent　durability　have　become　a　good　substitute　for　ordinary　steel　bars.　FRP　bars　have　high　tensile　strength,　but　their　compressive　strength　is　relatively　low　and　often　neglected,　so　the　application　of　FRP　bars　in　compression　members　has　been　restricted.　This　paper　proposes　a　new　pultrusion-winding-pultrusion　method　to　improve　the　compressive　ability　of　FRP　bars.　A　hoop　FRP　layer　is　winded　on　the　outer　surface　of　the　pultruded　FRP　core,　and　a　longitudinal　pultruded　layer　and　ribs　are　also　added　on　the　outermost　surface.　In　this　paper,　mechanical　properties　of　this　novel　FRP　bar　with　hoop　winding　layer　are　investigated.　First,　monotonic　tensile　and　compressive　tests　on　traditional　and　novel　GFRP　bars　were　conducted.　Then,　cyclic　tension-compression　loading　tests　were　also　carried　out　on　the　two　types　of　GFRP　bars.　Test　results　showed　that　the　compressive　ultimate　bearing　capacities　of　GFRP　bars　with　winding　layers　were　10　similar　to　20　kN　greater　than　those　of　the　traditional　GFRP　bars,　and　the　compressive　ductility　of　the　novel　GFRP　bars　was　also　improved.　Furthermore,　the　tensile　stress-strain　behaviors　of　both　GFRP　bars　were　linear-elastic　and　the　added　winding　layer　did　not　greatly　influence　the　tensile　properties　of　the　GFRP　bars.　Moreover,　for　the　cyclic　loading　test,　the　compressive　ultimate　load　of　GFRP　bars　was　80%similar　to　90%　of　that　under　monotonic　compressive　test,　and　the　tensile　ultimate　load　was　45%similar　to　65%　of　that　under　monotonic　tensile　test.　Compared　with　the　GFRP　bar　without　winding　layer,　the　overall　stiffness　of　the　novel　GFRP　bar　was　greater　than　that　of　the　traditional　one　and　the　ultimate　load　of　the　novel　GFRP　bar　was　also　greater.　In　addition,　seeing　that　the　residual　displacement　of　the　novel　GFRP　bar　was　greater　than　that　of　the　traditional　GFRP　bar,　winding　hoop　fibers　on　the　outer　surface　of　the　core　is　a　useful　way　to　improve　the　energy　dissipation　capacity　of　the　GFRP　bar.