Abstract: According to the statistical data of?each city and county of Anhui Province, AHP?has been used to determine?weights of impact factors in the study of?cultivated land occupied Process. A cultivated land early-warning?assessment?component model and GIS?integration scheme have been proposed. On this basis, an early-warning decision support system of the?cultivated land use in Anhui Province?is established, which provides?scientific and reasonable cultivated land protection information for decision making. New research suggests that the original?farmland and?rural residential land?have been transformed to urban?land and construction land, which is the main reason of the change of land use in Anhui Province.