In　this　paper　the　effects　of　steel　fiber　and　rubber　particles　on　the　mechanical　properties,　flexural　behavior,　compression　behavior　and　seismic　behavior　of　high　strength　concrete　are　studied.　The　results　show　that　the　compressive　strength　of　concrete　flexural　strength,　the　elastic　modulus　of　concrete　with　5%　rubber　particles　all　decreased.　After　adding　0.9%　steel　fibers　the　compressive　strength　and　elastic　modulus　increased　slightly,　but　the　flexural　strength　increased　significantly.　Rubber　particles　have　an　slight　effect　on　the　flexural　toughness　of　concrete.　While　after　adding　0.9%　steel　fiber　the　flexural　toughness　of　concrete　improve　significantly,　the　failure　mode　changed　from　brittle　fracture　to　ductile　fracture　with　multiple　cracking　phenomenon　and　the　descending　segment　of　load-deflection　curve　becomes　less　steep.　Rubber　particles　and　steel　fibers　all　can　improve　concrete　compressive　toughness　obviously,　increased　the　ductility　and　deformation　capacity.　After　adding　steel　fibers　and　rubber　particles,　because　the　compressive　strength　of　concrete　reduced,　the　bearing　capacity　of　seismic　columns　decreased　slightly　but　the　hysteresis　loop　changed　fuller　significantly,　the　ductility　and　energy　dissipation　capacity　enhanced　significantly　and　stiffness　degradation　become　slower.　(C)　2017　Elsevier　Ltd.　All　rights　reserved.