Abstract: This paper first describes the present situation of land degradation and its prevention and control in western China, and overviews the People's Republic of China-Global Environment Facility (PRC-GEF) Partnership on Land Degradation in Dryland Ecosystems. Furthermore, based on the investigation statistics from 56 sample counties, the paper analyzes the achievements and successful experiences of the prevention and control of land degradation under the background of international partnership. The research shows the practices of prevention and control of land degradation in western China not only effectively facilitate desertification prevention and control and biodiversity protection, but also promote the livelihood of farmers and herdsmen. The partnership project also realizes global environmental benefits to tackle the climate change and achieves satisfactory ecological, economical and social benefits.