NiCrBSi　coatings　with　different　Nb　additions　have　been　prepared　by　laser　cladding.　The　microstructure,　phase　composition,　hardness,　and　wear　resistance　of　the　coatings　were　studied　by　scanning　electron　microscopy　(SEM),　electron　probe　microanalyser　(EPMA),　X-ray　diffraction　(XRD),　microhardness　tester　and　M-200　wear　tester.　The　results　show　that　the　phases　in　the　NiCrBSi　coating　without　Nb　addition　include　gamma-Ni,　Cr23C6,　Cr7C3,　Ni3B,　Ni3Si2　and　CrB.　The　NbC　phase　appears　in　coatings　after　the　addition　of　Nb　element.　When　the　addition　of　Nb　is　2　wt-%,　the　NbC　particles　with　a　size　of　about　1.2　mu　m　were　found　in　the　coating,　and　the　amount　of　NbC　is　about　1.8　vol.-%.　With　the　increase　of　Nb　addition,　the　size　and　amount　of　NbC　in　the　coatings　also　increased.　When　the　addition　of　Nb　is　6　wt-%,　the　size　of　NbC　is　about　2.3-6.1　mu　m　and　the　morphology　of　NbC　changed　from　particle　to　quadrangular　and　petaloid　shaped.　In　addition,　when　the　addition　of　Nb　is　2　wt-%,　the　hardness　and　wear　resistance　of　the　coating　are　the　best,　and　the　wear　resistance　of　the　coating　is　104%　higher　than　that　without　Nb　addition.