The　carbon　nanotube(CNT)　field　emission　cathodes　based　on　different　thin　film　substrate　electrodes　are　prepared　by　electrophoretic　deposition(EPD).　The　morphologies　of　CNT　cathodes　after　being　sintered　under　high　temperature　are　observed　by　field　emission　scanning　electron　microscope(FESEM),　which　show　that　CNTs　are　uniformly　distributed　on　the　substrate　electrodes.　The　field　emission　properties　of　CNT　cathodes　are　influenced　by　substrate　electrode　materials　obviously.　The　turn-on　electric　field　of　the　CNT　cathode　on　CrCuCr　thin　film　is　0.51　V/μm,　and　that　on　ITO　transparent　thin　film　is　0.81　V/μm.　When　the　anode　current　density　is　0.7　mA/cm2,　the　brightness　luminosity　of　CrCuCr-CNT　cathode　is　995　cd/m2,　and　that　of　ITO-CNT　cathode　is　834　cd/m2.　It　can　be　indicated　that　the　property　of　CNT　cathode　on　CrCuCr　thin　film　is　quite　well,　for　its　turn-on　electric　field　is　lower　and　its　current　density　can　be　0.9　mA/cm2　stably.　At　last,　the　field　emission　properties　are　analyzed　by　the　model　of　double-potential　barrier　for　the　contact　between　CNT　and　the　substrate　electrodes.