Aconductancemodelofelectronictunnelingtransferissetup,andanewD .Cconductanceformulainone dimensionaldisorderedsystemisderived .BycalculatingtheD .Cconductivity,therelationshipamongtheelectricfield、temperatureandconductivityisanalyzed ,andtheeffectofdisordereddegreeontheD .Cconductanceisdiscussed .Theresultshowsthattheconductivityofadisorderedsystemdecreaseswiththeincreaseofdisordereddegree.Whentheelectricfieldisweak ,itsconductivityishighandhasaseriesofpeakvalues.Hewever,whentheelectricfieldisstrong,itsconductivityisweak.Inthelow temperatureregion,thedisorderedsystemshowsacharacteristicofnegativedifferentialdependenceofresistanceandtemperature.Onthecontrary,itsconductivitydecreaseswiththeriseoftemperatureinthehigh temperatureregion.Thisresultisingoodagreementwiththeexperiments.