The　effects　of　field　emission　properties　of　carbon　nanotube　(CNT)　cathodes　on　indium　tin　oxide　(ITO)　transparent-film　were　investigated,　which　were　prepared　by　screen-printing,　spraying　and　electrophoretic　deposition　methods　and　sintered　with　high　temperature.　The　morphologies　of　CNT　cathodes　prepared　by　different　transfer　methods　were　observed　by　scanning　electron　microscope　(SEM),　and　the　field　emission　properties　were　characterized　in　the　same　condition.　The　results　show　that　three　kinds　of　CNT　cathodes　have　different　field　emission　properties.　The　field　emission　tests　indicate　that　the　turn　on　electric　field　of　the　CNT　cathodes　prepared　by　screen-printing　method　is　2.21　V/μm,　the　one　prepared　by　spraying　method　is　1.61　V/μm,　and　the　one　prepared　by　electrophoretic　deposition　method　is　1.85　V/μm.　When　the　electric　field　is　2.3　V/μm,　it　can　be　speculated　that　the　field　emission　property　of　the　CNT　cathode　prepared　by　spraying　method　take　precedence　over　the　other　two,　and　the　one　prepared　by　screen-printing　is　the　worst.　The　results　were　analyz　by　the　metal　semiconductor　theory.