In　order　to　investigate　the　aseismic　performance　of　reinforced　concrete　(RC)　rectangular　hollow　bridge　piers　constrained　with　fiber　reinforced　polymer　(FRP),　cyclic　tests　of　six　RC　specimens　with　aspect　ratio　4　under　constant　axial　loads　(axial　compression　ratio　is　0.2)　and　uniaxial　bending　were　conducted　here.　The　aseismic　performance　parameters　including　failure　characteristic,　flexural　ductility,　dissipated　energy　and　lateral　ultimate　load　capacity　were　analyzed.　The　test　results　indicated　that　the　ductility　and　dissipated　energy　of　the　RC　rectangular　hollow　bridge　piers　constrained　with　FRP　are　improved　significantly;　the　displacement　ductility　coefficient　and　the　total　energy　dissipation　increase　about　65.4%　and　25.8%,　respectively;　the　constrained　behavior　of　FRP　has　little　influence　on　the　ultimate　lateral　force　capacity　of　RC　rectangular　hollow　bridge　columns　(it　increases　about　3.0%　at　most).　Based　on　the　test　results　and　Clough　model,　a　simplified　hysteretic　model　considering　the　strength　and　stiffness　degradation　effects　of　bridge　piers　constrained　with　FRP　was　established　and　its　unloading　stiffness　and　reloading　stiffness　regression　formulae　were　deduced.