To　overcome　the　disadvantage　of　bamboo　reinforcement　in　concrete　members,　such　as　poor　durability,　poor　bond　performance　with　concrete　and　large　strength　discreteness,　two　new　modification　methods　are　proposed　in　this　paper.　The　experimental　researches　on　the　mechanical　property　of　bamboo　reinforced　concrete　columns　under　monotonic　eccentric　loads　are　conducted,　and　the　influence　of　different　modification　methods,　bamboo　reinforcement　ratio,　and　eccentricity　are　studied.　The　results　show　that　the　failure　modes　of　bamboo　reinforced　concrete　columns　under　eccentric　load　are　brittle　failure,　and　the　crushing　of　concrete　is　a　relatively　safe　failure　mode.　Both　of　the　two　new　modification　methods　can　improve　greatly　the　mechanical　property　of　bamboo　reinforced　concrete　columns,　the　modified　bamboo　reinforcement　can　work　together　with　concrete,　and　its　deformation　can　meet　the　requirement　of　plane　section　assumption.　©　2016,　The　Editorial　Board　of　Journal　of　Basic　Science　and　Engineering.　All　right　reserved.