Reactive　powder　concrete　(RPC)　is　a　kind　of　cement-based　composite　with　super-high　compressive　strength,　high　toughness,　good　durability　and　stability.　It　has　been　used　in　some　concrete　structures;　however　its　high　cost　limits　more　extensive　applications.　Taking　prices　of　RPC　raw　materials　as　the　cost　index,　a　calculation　method　for　RPC　cost　performance　ratio　is　proposed.　The　analysis　shows　that　the　steel　fiber　is　the　most　expensive　raw　material　among　all　of　the　RPC　components.　Therefore,　an　experimental　study　on　influence　of　steel　fiber　ratio　by　volume　to　RPC　mechanical　properties　was　carried　out,　including　axial　compressive　strength,　tensile　strength,　and　flexural　strength.　Test　results　show　that　the　RPC　axial　compressive　strength　increases　with　the　increase　of　steel　fiber　volume　ratio　when　it　is　in　the　range　of　0.5%　to　2%,　while　it　decreases　when　it　is　larger　than　2%.　The　RPC　splitting　tensile　strength　and　flexural　strength　mostly　increase　with　increasing　steel　fiber　volume　ratio.　Finally,　the　relationship　between　cost-performance　ratio　and　content　of　steel　fiber　is　analyzed　to　become　a　reference　for　engineering　applications　and　further　studies.