China'seasternareaisatmiddleandlaterstageofindustrializationduringwhichtherelationbetweenurbanandruralareas,industryandagricultureappearsmaladjusted.Themainproblemsareshrinkageinagriculturalcomparativeearningandlackofdrivingforceofagriculturaldevelopment.BasedoncalculatingagriculturallaborproductivityineastChinafrom1996to2005,thispaperanalyzescontributingdegreeofmotiveforcesofagriculturedevelopintenprovincesandcitiesofeastChinaapplyingGCA(Greycorrelativeanalysis).TheresultsshowthatthereisnoabsolutecorrespondencebetweenthelevelofindustrializationandagriculturallaborproductivityinChina'seasternarea.Thereisnosynchronousdevelopmentbetweenindustryandagriculturallaborproductivityinsomeareas.Fertilizerandagriculturalmachineryinputhadhighcontributingdegreefortenyears;however,contributingdegreeinlandandirrigationworkinputwaslow.Non-materializationinputsbecametheleadingroleinmostprovincesandcities'increaseofagriculturallaborproductivity.Modernagriculturaldevelopmentneednon-materializationinputsasprimarymotiveforce,atthesametime,directmaterialinputandfacilityinputasguaranteedfunction.Forsomereasons,agriculturaldevelopmentischaracterizedby'moredirectmaterialinput,lessfacilityinput'ineastChinanow.OptimaldrivingforcemodeloffutureagriculturaldevelopmentineastChinaisthatnon-materializationinputsaredominant,thatperfectedfacilityinputareguarantee,andthatcertainsubstanceinputsarenecessary.