Axial　compressive　behavior　of　rectangular　concrete　might　differ　greatly　when　it　is　confined　by　fiber　reinforced　polymer　(FRP)　with　different　rupture　strains.　To　address　this　issue,　this　study　experimentally　investigated　and　compared　the　monotonic　axial　compressive　behavior　of　rectangular　concrete　confined　by　FRP　with　three　rupture　strains.　Axial　compression　experiments　of　28　rectangular　concrete　stub　columns　confined　by　FRP　were　carried　out.　The　FRP　utilized　in　this　study　included　conventional　FRP　with　small　rupture　strain,　i.e.,　carbon　FRP　(CFRP)　and　glass　FRP　(GFRP),　and　large　rupture　strain　FRP　(LRS-FRP),　i.e.,　polyethylene　terephthalate　(PET)　FRP.　The　key　test　parameters　were　the　rupture　strain　of　FRP,　the　FRP　thickness,　and　the　cross-sectional　aspect　ratio.　Failure　modes,　stress　vs.　strain　behavior,　axial　stress　and　strain　relationship,　hoop　rupture　strain,　the　effect　of　FRP　confinement　stiffness　ratio,　and　the　effect　of　cross-sectional　aspect　ratio　were　analyzed,　respectively.　Results　of　this　research　showed　that　the　rupture　strain　of　FRP　exhibited　significant　influence　on　the　failure　mode　and　the　axial　deformation　of　rectangular　concrete　confined　by　FRP.　FRP　strain　reduction　factors　were　decreased　with　the　increasing　rupture　strains　of　FRP.　This　is　because　the　rectangular　concrete　confined　by　FRP　with　larger　rupture　strains　dilated　more　non-uniformly　than　its　counterpart　using　smaller　rupture　strain　FRP.　In　addition,　based　on　the　transition　point　and　the　ultimate　condition,　the　axial　stress　vs.　strain　curves　of　rectangular　concrete　confined　by　FRP　could　be　categorized　into　three　types,　including　sufficient,　moderate,　and　insufficient　FRP　confinement,　respectively.