Energyplaysanimportantroleintheeconomiclife.Withtherapiddevelopmentofeconomy,theconstraintofenergyonthesustainabledevelopmentofeconomyisbecomingmoreandmoreobvious.ThispaperjuststudiesthefactorsinfluencingenergyefficiencyofChinaandtherelationshipbetweenenergyefficiencyandChina'seconomicgrowth.ByusingtimeseriesmultivariablelinearregressionmethodswithChina'srelevantdatafrom1953to2006,thispaperconstructstheregressionmodeltoanalyzethefactorsthatwouldimpactenergyefficiency.Afterthat,aregressionmodelofChina'srealoutputtocapital,laborandenergyefficiencyisconductedtoestimatethemarginalcontributionofeveryfactortotherealoutputtoprovethefundamentalinfluenceofenergyefficiencytotheeconomicgrowth.Intheend,somepoliciesandrecommendationsarealsoputforwardinordertoimprovetheenergyefficiencyofChina.
