Abstract: There are 36,300,000 hm ² of salinized land in China. Land salinization is one of the most serious ago eco environment problems. Harnessing and prevention of land salinization are extremely important to the prevention of agro ecosystem degradation, the protection of ago eco environment and the security of food supply in future for arid, semi arid and semi humid areas. The paper describes the development of land salinization in China,discusses the possible land and economic losses caused by land salinization. On the bases of evaluations on technical, social and economic factors and on the existing technical, administrative, policy and legislative systems, the countermeasures for combating land salinization have been proposed. The countermeasures include regional strategic measures, technical policies, management policies, legislative measures and economic incentive measures. 

Key words: China, land, salinization, prevention, countermeasure, policy