This　paper　presents　an　experimental　study　on　the　behavior　of　circular　concrete　columns　reinforced　by　BFRP　PVC　tubes　under　uniaxial　loading.　A　total　of　six　specimens　were　prepared　and　tested　under　uniaxial　loading.　The　main　parameters　varied　in　the　tests　were　strengthening　ratio　and　strengthening　approach　of　BFRP.　The　performance,　such　as　failure　modes,　ultimate　bearing　capacity　and　stress-strain　curves,　was　investigated　in　details　and　a　formula　was　proposed　to　predict　the　compressive　ultimate　strength.　The　results　show　that　this　kind　of　confined　columns　obviously　improves　the　ultimate　bearing　capacity,　and　the　ultimate　bearing　capacity　increases　with　the　strengthening　layers.　The　formula　proposed　is　applicable　and　efficient　for　prediction　of　the　ultimate　bearing　capacity　as　well.