Fiber　reinforced　polymer　(FRP)　feature　has　obvious　brittle,　while　the　hybrid　fiber　reinforced　polymer　(HFRP)　with　low　brittleness,　has　multiple　fracture　characteristics.　To　research　the　axial　compression　behaviors　of　ultrahigh-performance　concrete　(UHPC)　confined　by　HFRP,　thirty-six　HFRP-confined　UHPC　cylindrical　specimens　were　tested　and　the　stress-strain　curves　were　measured.　The　experiment　shows　none　of　the　existing　representative　models　provided　a　reasonable　prediction　for　strength　and　strain　of　HFRP-confined　UHPC　specimen,　therefore　a　new　ultimate　strength　and　strain　perdition　model　considering　the　confinement　effectiveness　of　different　hybrid　FRP　series　was　proposed.　The　new　proposed　model　presented　the　best　fitting　results.　The　stress-strain　response　predicted　by　the　existing　representative　models　are　all　below　the　experimental　curves,　therefore　a　new　two-stage　constitutive　model　was　proposed,　which　relatively　fits　the　test　curves　better　than　that　of　the　existing　models.　The　new　proposed　model　form　is　simple　for　engineers　to　use.　©　2016,　Beijing　University　of　Technology.　All　right　reserved.