The　solidification　microstructure,　types　of　eutectic　borocarbides,　heat　treatment　properties　and　wear　resistance　of　steel　with　x　wt%　B-0.4　wt%　C-6.0　wt%　Cr-4.0　wt%　Mo-1.0　wt%　Al-1.0　wt%　Si-1.0　wt%　V-0.5　wt%　Mn　(x　=　1.0,　2.0,　3.0)　have　been　investigated　in　this　present　study.　The　results　indicate　that　the　as-cast　Fe-B-C　alloy　steel　consists　of　pearlite,　ferrite,　and　borocarbides　M-2(B,C)　(M　=　Fe,　Cr,　Mo,　V,　Mn).　After　quenching　or　quenching　and　tempering　treatment,　ferrite　and　pearlite　transform　into　martensite.　With　the　increase　of　boron　content,　the　macrohardness　of　alloys　increases　obviously　while　wear　loss　decreases.　Borocarbides　with　chromium　addition　have　good　toughness　and　no　cracks　are　observed　on　worn　surfaces.　The　wear　mechanism　changes　from　micro-cutting　accompanied　with　the　spalling　of　borocarbides　to　single　micro-cutting　with　the　boron　content　rising.