On the loess plateau of China, soil and water losses are serious and the ecological environment is fragile. This region is also considered as an integral part of the Strategy of Ecological Security of China.To recovery the ecosystem and to develop the industry on the Loess Plateau, researching and integrating technology and establishing experiment and demonstration prototype are urgent affairs in this region.The specific project of "Technology and demonstration of water and soil loss comprehensive harness on the Loess Plateau (2016YFC0501700)" is a part of the national key research and development plan of "Restoration and Protection of Typical Fragile Ecology".In this project, the main issue is to solve the Scientific and technical problems for the ecology sustained restoration and ecology security, based on the soil and water conservation technology developing and integrating though the six typical regions in the regional scale.