The　scandia　doped　tungsten　powders　have　been　obtained　by　a　new　method　of　spray　drying　combined　with　two-step　reduction　in　hydrogen　atmosphere.　The　impregnated　cathode　prepared　with　the　obtained　powders　has　an　excellent　emission　capability　of　121　A/cm(2)　at　950　degrees　C　b　in　pulsed　condition.　The　DC　life　test　result　indicates　that　the　emission　current　density　of　40　A/cm(2)　has　lasted　up　to　4000　hours.