In　order　to　investigate　the　shear　behavior　of　high-strength　concrete　beams　with　HRB600　steel　bars,　the　monotonic　loading　tests　of　five　concrete　beams　with　longitudinal　high-strength　reinforcement　were　carried　out.　The　main　design　parameters　of　test　specimens　were　longitudinal　reinforcement　ratio　and　steel　fiber　contents.　The　shear　load-carrying　capacity,　load-deflection　curve,　crack　width,　failure　characteristics　of　each　specimen　were　compared.　The　test　results　show　that　the　cracking　load　and　ultimate　shear　load　of　high-strength　concrete　beams　increase　with　the　increase　of　longitudinal　reinforcement　ratio,　but　the　width　of　diagonal　cracks　decreases;　the　steel　fiber　can　effectively　improve　the　cracking　load　of　high-strength　concrete　beams　and　limit　the　generation　and　development　of　diagonal　cracks;　with　the　increase　of　steel　fiber　content,　the　shear　load-carrying　capacity　of　high-strength　concrete　beams　increases;　the　shear　load-carrying　capacity　of　test　beams　was　calculated　using　the　current　code　for　design　of　concrete　structures　and　technical　specification　for　application　of　fiber　reinforced　concrete,　and　the　calculated　results　were　less　than　the　measured　results.　©　2020,　Engineering　Mechanics　Press.　All　right　reserved.