Using　laser　cladding　technology,　a　Ni60A　alloy　cladding　layer　added　with　rare　earth　oxides　CeO2　and　Cr3C2　was　prepared　on　the　surface　of　Cr12MoV　die　steel.　Through　scanning　electron　microscopy　(SEM),　X-ray　diffraction　(XRD)　and　energy-dispersive　X-ray　spectroscopy　(EDS)　analyses,　the　influence　of　CeO2　on　the　microstructure,　hardness　and　wear　resistance　of　Ni60A-Cr3C2　laser　cladding　layer　was　studied,　and　the　mechanism　of　action　of　CeO2　was　discussed.　The　results　show　that　in　the　laser　cladding　Ni60A-Cr3C2　coating,　after　adding　CeO2　powder,　the　cladding　layer　is　well　formed　and　the　microstructure　is　significantly　refined.　As　the　addition　of　CeO2　increases,　the　microhardness　of　the　cladding　layer　increases　first　and　then　decreases.　When　the　addition　amount　of　CeO2　is　2wt.%,　the　microhardness　of　the　coating　is　the　largest,　which　is　1107HV.　As　the　content　of　CeO2　continues　to　increase,　the　hardness　decreases.　As　the　content　of　CeO2　in　the　cladding　layer　increases,　the　wear　loss　of　the　sample　first　decreases　and　then　increases.　When　the　mass　fraction　of　CeO2　is　1wt.%,　the　wear　loss　of　the　cladding　layer　is　the　least　and　the　wear　resistance　is　the　best.　The　wear　morphology　of　the　Ni60A+Cr3C2　cladding　layer　without　adding　CeO2　appears　with　a　lot　of　abrasive　debris,　and　the　main　mechanism　is　adhesive　wear.　When　the　addition　amount　of　CeO2　is　1wt.%,　the　wear　mainly　appears　as　furrow,　which　denotes　abrasive　wear.