Regional rural systems respond to global environmental change with multi-dimensional transformation. However, in the widespread traditional agricultural areas, rural transformation is often seen as invisible and sometimes remains hidden by official statistics of urbanization and industrialization at a regional level. The study implemented field survey and ethnography methods, exploring the trajectory and driving paths of rural transformation in traditional agricultural areas. The findings indicate that the dominant livelihood experienced a transitional trajectory from traditional farming to jujube-oriented and then to a non-farming livelihood. Furthermore, the land use showed an eco-transformation from farmland to forest land, and from cultivated land gradually to uncultivated land. We also find that the household behaviors actively or passively adapted to environmental effects, such as climate change, market change, urbanization impact, and policy regulation, and then drove non-agricultural transformation and eco-transformation in traditional agricultural areas. Based on these findings, the study confirms that there is a clear rural transformation in traditional agricultural areas, and reveals that the Loess Plateau turned green from bottom to top. Finally, the study calls to take the road of green transformation, and proposals are presented in terms of ecology, livelihood, and industry.