Control form of stock cooperation system for soil and water conservation is one new product of combining soil and water conservation with market economic and rural economic reform.Through discussing on developing background,condition and role of stock cooperation system in loess plateau explains that it is not only required by regional natural environment development,but also required by social economic reform.Control form of stock system is continously improving and standarding through practice and exploit,and its character,advantage,and function are accepted by local people,it is popularing rapidly and has significiant achievements.This control form will play important role in soil and water loss control,ecological agriculture constructing,regional economic promotion in Loess Plateau.