Abstract:As showed by the investigation results on changes of land utilization in Linyi city, the net decreasing amount of cultivated land area was 1400hm2 from 1997 to 2005, and the annual average net decreasing amount was 175hm2. In order to ensure the cultivated land conservation and the sustainable development of primary farmland, on the basis of collecting datas and field investigation results, relative countermeasures are put forward to protect and use cultivated land effectively, such as actively promoting the conservation system reform of the cultivated land and primary farmland, speeding up the pace of innovation system, strengthening rectification system, supervision and monitoring mechanisms, reinforcing the effort in reclamation of land and management; studying the development of non-public conversion of cultivated land for construction of the mechanism and coordinating relationship between cultivated land protection and ecological environment.