Aimed　at　the　problems　of　the　austenitic　manganese　steel,　such　as　the　thermal　conductivity　is　poor,　the　heat　is　not　easy　to　export　and　the　workpiece　is　easy　to　heat　deformation,　which　leads　to　the　processing　precision　is　difficult　to　guarantee,　and　the　cutting　speed　cannot　be　improved,　we　study　the　effects　of　Cr,　Mo　and　rare　earth　alloy　elements　on　thermal　conductivity　and　wear　resistance　of　the　austenitic　manganese　steel　herein.　The　results　showed　that　the　thermal　conductivity　can　be　enhanced　of　19.6%,　the　wearing　rate　is　reduced　by　54.5%,　and　crystal　grain　is　improved　from　grade　3　to　5　comparing　austenitic　medium　manganese　steel　to　the　traditional　high　manganese,　when　the　Cr　content　is　about　1%(ω),　the　content　of　Mo　is　about　2%(ω),　and　0.15%(ω)　of　the　rare　earth　is　added.　©　2017,　Science　Press.　All　right　reserved.