TiB2　powder　was　coated　using　Ni-B　alloy　by　electroless　plating　to　improve　its　spraying　performance.　The　coating　process　was　examined　and　the　coating　was　analyzed　by　scanning　electron　microscopy　(SEM)　and　energy　dispersive　spectroscopy　(EDS).　The　apparent　density　and　flowability　of　the　coated　powder　were　tested　by　Hall　flow-meter.　The　results　show　that　the　apparent　density　is　increased　from　1.15-1.17　to　1.38-1.39　g/cm3　and　the　flow　time　of　50　g　coated　TiB2　powder　is　94-97　seconds.　The　denser　Ni-B　coating　can　be　obtained　by　supplementary　plating　bath　and　the　percentage　coating　area　is　more　than　95%.