High　Strength　steel　reinforced　Reactive　Powder　Concrete　(RPC)　Beam　is　a　new　type　of　beams　which　has　evident　advantages　than　the　conventional　concrete　beams.　However,　there　is　limited　research　on　the　shear　bearing　capacity　of　high-　strength　steel　reinforced　RPC　structures,　and　there　is　a　lack　of　theoretical　support　for　structural　design.　In　order　to　promote　the　application　of　high-strength　steel　reinforced　RPC　structures　in　engineering,　it　is　necessary　to　select　a　shear　model　and　derive　applicable　calculation　methods.　By　considering　the　shear　span　ratio,　steel　fiber　volume　ratio,　longitudinal　reinforcement　ratio,　stirrup　ratio,　section　shape,　horizontal　web　reinforcement　ratio,　stirrup　configuration　angle　and　other　variables　in　the　shear　test　of　32　high-strength　steel　reinforced　RPC　beams,　the　applicability　of　three　theoretical　methods　to　the　shear　bearing　capacity　of　high-　strength　steel　reinforced　RPC　beams　was　explored.　The　plasticity　theory　adopts　the　RPC200　biaxial　failure　criterion,　establishes　an　equilibrium　equation　based　on　the　principle　of　virtual　work,　and　derives　the　calculation　formula　for　the　shear　bearing　capacity　of　high-strength　steel　reinforced　RPC　beams;　Based　on　the　Strut　and　Tie　Theory,　considering　the　softening　phenomenon　of　RPC,　a　failure　criterion　is　established,　and　the　balance　equation　and　deformation　coordination　condition　of　the　combined　force　are　combined　to　derive　the　calculation　formula　for　the　shear　bearing　capacity　of　high-strength　reinforced　RPC　beams;　Based　on　the　Rankine　theory　and　Rankine　failure　criterion,　taking　into　account　the　influence　of　size　effects,　a　calculation　formula　for　the　shear　bearing　capacity　of　high-strength　reinforced　RPC　beams　is　derived.　Experimental　data　is　used　for　verification,　and　the　results　are　in　good　agreement　with　a　small　coefficient　of　variation.