This study is based on the analysis of natural resources of agriculture and the structure of land use in Jiaxing area of Zhejiang Province. It Contains the prediction of the potential productivity of food, plant oil and meat on unit Land area under Certain conditions and in different periods. In this paper, authors present a population supporting capacity of land resources in above-mentioned area, fitting in with the potential productivity at the different standards of living-type.These results show that the supply of plant oil is enough, the food is abundant, but the meat is a little lack for population supporting capacity, which will limit the raise of living standard in some degree. In 1985, the living-type which fits in with population supporting capacity of land resources, is in the stage of warm and well-fed type, and will change into the stage of abundant type in 1990, of comfortable type in 2000 and the stage of rich type in 2020.