That reclaiming in steep slop land extend the area of dry sloping fied plays an most importment role in soil and water loss and forest eco-environment serious poor in karst area of Guizhou province. On the bases of dry sloping fields structure and its damages. the countermeasures of conversion from farmland to forest in steep slop land are pointed out on sustainable development, that is to program the plan of conversion of famland to forest and using to use the steep slop land reasonably of conversion from farmland to forest, to promote village's development; to follow the way of sustainable intensive agriculture development; to popularize the successful models of conversion from farmland to forest in steep slop, make the policy of village's development,etc