Taking the highway project from Tianshi to Chankou section as an example, the requirement and content of replantation project design of soil and water conservation plan at the fessibility research stage are intrduced systematically. (1) According to the requirement of the main project, the distribution and area of plots with different replantation function and requirement are determined, and different management plots need to be delimi-tied; (2) The stand condition of different replanted plot, the factors of different stands need to be rationally classified , therefore, the plant spices to be applied and distribution plan for different replantation plots of different management areas are proposed; (3) The specific requirement of the project in accordance with the general project is studied, and the replanting plan with higher feasibility is put forward, then the typical design is conducted.