In this paper,the optimum dividing method of selecting predictors is used to link closely the climate and yield of agricultural products for dividing of regions,Jilin province is divided into five regions,namely;the western region, middle region,mountainous region,hill region and southeastern region.Statis_ tical verification has proved that these five crops,crop yields,and climate in these five regions are significantly different,but the division of regions is proper and desirable.At the same time,the yield index and the yield value index are suggested for the consideration of rational overall layout of crops in these five regions.