To　satisfy　the　requirement　for　martensite　stainless　steel　layers　with　high　efficiency,　an　optimized　FeNiCrMo　alloy　layer　was　prepared　using　the　laser　cladding　technique.　The　microstructure　and　frictional　wear　behavior　of　the　cladding　layer　(a　single　layer　with　a　thickness　exceeding　2　mm)　were　investigated.　The　results　confirmed　a　homogeneous　thickness　and　crack-free　character　of　the　cladding　layer.　In　the　microstructure,　equiaxed,　dendritic　and　cellular　grains　were　distributed　along　the　thickness　direction,　and　martensite　and　Cr/Mo-rich　ferrite　were　observed　in　the　dendritic　and　inter-dendritic　regions,　respectively.　The　frictional　coefficient　and　wear　volume　of　the　cladding　layer　increased　under　increasing　applied　loads　in　a　block-on-ring　wear　test,　and　the　wear　mechanism　was　dominated　by　abrasive　and　oxidative　wear　types.　Under　higher　loads,　adhesive　wear　prevailed.　In　a　ball-on-disc　wear　test,　increasing　the　temperature　decreased　the　frictional　coefficient　and　increased　the　wear　volume.　Oxidative　and　fatigue　wear　dominated　the　wear　mechanism　under　this　condition.