Soil erosion protecting plan is not only the precondition before the production and construction projects approved, but also the technological document when implementing soil and water conservation projects. The profundity of soil erosion protecting plan at the feasibility stage may have a direct influence on“the three simultaneous works”institution in soil and water conservation. According to the technical specifications of soil erosion protecting plan in production and construction projects and the demands on compiling the feasibility study report profundity of the general investment to the fixed asset projects, this paper investigates the profundity of feasibility study for soil erosion protecting plan in production and construction projects.