Based　on　the　4-point　bending　flexural　test　of　7　concrete　beams　and　the　axial　compression　test　of　21　circular　concrete　columns,　the　failure　modes　of　specimens,　load-deflection　curves　of　confined　beams　and　stress-strain　curves　of　strengthened　columns　were　derived;　and　the　effect　of　IHFRPs　with　different　proportions　on　the　bearing　capacity,　the　stiffness　and　the　ductility　of　specimens　were　studied.　The　results　show　that　the　concrete　beams　strengthened　with　IHFRPs　have　excellent　plastic　deformation　and　energy　absorption　capacities;　the　capacity,　stiffness　and　ductility　of　beams　can　be　effectively　improved　by　IHFRPs;　the　ductility　of　circular　concrete　columns　can　be　enhanced　noticeably.　Based　on　experimental　data,　a　strength　model　of　concrete　columns　confined　by　IHFRPs　has　been　established.