Abstract: In order to solve the problems of the low technical quality of farmers and thus restricting the sustainable economic and social development of the poverty-stricken areas of northwest China, the article, based upon intensive policy and documentary analysis, in-depth interviews, focus group discussions, survey and other methods, with emphasis on analysis of the practice of four farmers' field schools (FFSs) of Wuwei City, Gansu. By summing up the successful experience of four FFSs in Wuwei City, Gansu Province, the article points out that FFSs’ unique operating mode, including the effective conversion of peasants roles, enhancing the learning atmosphere of the community, the improvement of the organization of farmers, has enhanced the difficulties faced by improving technical quality of farmers in poverty-stricken areas of northwest China. FFS is an effective extension and supplement Peasant education promotion system. In the end, the article pointed out that the sustainable developmental management and operation FFS mode is an effective way to improve quality of the farmers in poverty-stricken areas.