To　explore　the　behavior　of　concrete-filled　FRP-PCV　tubular　flexural　members,　a　total　of　six　specimens　were　tested　and　a　procedure　code　was　developed　for　the　finite　element　analysis.　Furthermore,　a　comparison　was　made　between　the　simulation　and　experimental　results.　On　the　basis　of　verifying　simulation　results　against　experimental　results,　the　main　parameters　varied　in　the　tests　were　the　layers　of　FRP,　types,　and　patterns.　The　effect　of　the　varying　parameters　on　the　flexural　behaviors　was　investigated,　such　as　the　failure　modes,　ultimate　bending　capacity,　and　stress-strain　relation　curves.　Additionally,　the　working　principle　was　studied,　and　a　simplified　formula　was　presented　to　compute　the　ultimate　bending　moment　capacity.　The　results　show　that　the　external　confinement　of　concrete　specimens　by　FRP-PVC　tubes　results　in　enhancing　the　ultimate　bending　strength　and　ultimate　deformation,　that　the　ultimate　bending　capacity　increases　with　the　FRP　layers,　and　that　the　confining　effect　in　CFRP　is　better　than　that　in　BFRP,　which　brings　about　the　remarkable　rise　in　bearing　capacity　and　ductility.　©,　2015,　Tsinghua　University.　All　right　reserved.