The　recent　advances　in　Mo-La2O3　thermionic　cathode　materials　were　presented.　It　is　shown　that　Mo-La2O3　cathode　has　better　ductility,　radioactive　pollution-free,　excellent　thermionic　electron-emission　properties　and　lower　operating　temperature　compared　with　W-ThO2　cathode.　At　operating　temperature　1350-1400°C,　the　average　saturation　current　of　the　Mo-La2O3　cathode　is　118mA,　the　corresponding　average　current　density　is　367mA/cm2,　and　the　average　emission　efficiency　is　11.8mA/W.　The　lifetime　of　diode　is　more　than　2000h　when　the　stable　emission　current　is　80mA/W.　Moreover,　the　lifetime　of　practical　6T51-type　triode　is　more　than　1000h.　These　advances　show　that　the　Mo-La2O3　cathode　electron　tube　is　closer　to　industry　application.