With the farmland data of Jingzhou City in Hubei Province during 1997-2004 as base and platform,based on gray forecast model GM (1,1), the dynamic changes of farmland in the amount are explored to offer some reference for sustainable use planning of land. the results showed,model GM (1,1) fits a higher degree to the historical trends of farmland resources number in Jingzhou City,the forecast results also meet the amount changes of farmland. In the next few years,the area of farmland in jingzhou city will continue a decreasing trend. Therefo...