The　rare　earth　tungsten　electrode　was　prepared　by　spark　plasma　sintering　(SPS)　with　W-La2O3-Y2O3-ZrO2　composite　powders　synthesized　by　second-time　reduction　as　raw　materials.　And　the　effects　of　SPS　sintering　temperature　on　the　microstructure　and　hardness　of　sintered　rare　earth　tungsten　electrode　were　studied.　The　structure　and　morphology　were　investigated　by　metallographic　microscope,　scanning　electron　microscopy　and　Vickers　Indenter,　and　the　density　degree　of　rare　earth　tungsten　electrode　sintered　sample　were　analyzed　based　on　Archimedes　Principle.　Sintering　process　was　performed　at　a　temperature　range　of　1200-1500　degrees　C　for　a　dwell　time　of　5　min　under　an　external　pressure　of　50　MPa　in　vacuum,　the　optimum　sintering　temperature　of　sintered　rare　earth　tungsten　electrode　was　1450　degrees　C;　with　the　increase　of　sintering　temperature,　the　tungsten　grains　in　the　microstructure　of　the　sintered　sample　grew　gradually,　the　relative　density　and　the　hardness　of　the　sintered　sample　also　increased.　Tungsten　grain　growth　can　be　effectively　inhibited　by　spark　plasma　sintering,　which　prompts　fine　grain　strengthening　of　the　tungsten　electrode,　and　it　is　possible　to　prepare　a　high　densification　and　fine　grain　structure　rare　earth　tungsten　electrode.