To　improve　the　wear　properties　of　AZ91D　magnesium　alloys,　a　Cu0.9NiAlCoCrFe　high　entropy　alloy　(HEA)　coating　was　fabricated　on　AZ91D　magnesium　alloys　by　laser　cladding　using　prealloyed　Cu0.9NiAlCoCrFe　powders.　The　microstructure　of　the　HEA　coating　was　characterized　by　OM,　SEM　and　XRD.　The　wear　resistance　of　the　HEA　coating　was　evaluated　under　dry　sliding　wear　test　condition　at　room　temperature.　The　results　show　that　the　HEA　coating　mainly　consists　of　a　simple　BCC　solid　solution　phase.　The　HEA　coating　exhibits　excellent　wear　resistance.　The　main　wear　mechanisms　of　the　HEA　coating　and　the　AZ91D　substrate　were　different,　the　former　dominated　by　oxidative　abrasive　wear　and　the　latter　suffered　from　both　adhesive　and　abrasive　wear.　©　(2014)　Trans　Tech　Publications,　Switzerland.