Using the annual mean temperature and precipitation data from 44 meteorological observatories during 19552013,the evapotranspiration climate productive potential(TSPV)of Shaanxi province was analyzed by Thornthwaite Memoriai model.The results,which obtained on the basis of EOF analysis,R/S analysis and correlation analysis,showed that the annual mean temperature increases by 0.19℃/decade while the annual mean precipitation decrease by 0.84 mm/decade.The climate productivity slightly increased from the south-west to north-east region by the mean year by 1.31kg/hm~2.It showed significant correlation among climate productivity,temperature and precipitation.Besides,precipitation was a limited factor of climate productivity.The future climatic potential productivity is booming.The relevance between grain output and climatic productive potential is not remarkable.However,they displayed similar fluctuate pattern for an extended period of 59 years.The increasing of climatic efficiency year by year gives opportunity to the growth at an exciting weather condition.