The　microstructure,　mechanical　properties,　and　electron-emission　properties　of　a　newly　developed　heated　cathode　material　Mo-CeO2　with　4.0%　(mass　fraction)　of　CeO2　were　investigated.　It　is　shown　that　the　Mo-CeO2　cathode　material　possesses　high　tensile　strength　and　good　room-temperature　ductility.　After　carbonized,　the　Mo-CeO2　cathode　material　has　a　higher　zero　field　emission　current　density　and　a　lower　work　function　compared　with　the　W-ThO2　cathode　material.