The　purpose　of　this　research　is　to　understand　the　impact-resistant　behavior　of　reinforced　concrete(RC)　beams　with　hooked-end　steel　fibers.　A　series　of　6,　simply-supported　concrete　beams　with　different　volume　fractions　of　steel　fibers　and　different　shear　reinforcement　ratios　were　tested　under　free-falling　drop-weights,　impacting　the　specimens　at　the　mid-span.　An　analysis　was　made　of　the　effects　of　different　shear　reinforcement　ratios　and　different　volume　fractions　of　steel　fibers　on　the　impact-resistant　behavior　of　RC　beams.　The　crack　patterns　of　the　specimens　were　recorded　using　a　high　speed　video　camera.　The　strains　of　longitudinal　and　transverse　steels　were　recorded,　and　the　time　histories　of　mid-span　displacement　were　described　in　detail.　The　results　obtained　are　as　follows:　under　the　same　impact　load　and　with　the　increase　of　stirrup　ratio,　the　reinforced　steel　shows　a　less　frequent　occurrence　in　yield　and　failure,　and　the　maximum　crack　width　decreases　under　impact　load;　Under　impact　load,　improving　the　volume　fractions　of　steel　fibers　only　has　negligible　effect　on　the　concrete　matrix　strength,　but　for　the　whole　stiffness　of　the　specimens　the　effect　is　more　obvious.　Meanwhile　increasing　steel　fiber　content　will　reduce　the　strain　of　stirrups,　making　specimen　reinforcement　play　a　better　role;　The　increase　of　volume　fractions　of　steel　fibers　can　significantly　reduce　the　occurrence　and　development　of　cracks　in　specimens.　Changes　in　the　crack　pattern　of　the　beam　occur　at　the　same　time,　making　the　area　of　crack　occurring　relatively　concentrated　on　the　mid-span　in　the　form　of　vertical　cracks,　while　reducing　the　cracks　near　the　support.　©,　2015,　Tianjin　University.　All　right　reserved.