Abstract: The integrated management of small watershed has strongly improved the sustainability and accelerated the social and economic development in those villages suffering from serious soil erosion since it was widely implemented in 1980s.Most relevant studies on the contribution of soil and water conservation to sustainable development provided qualitative descriptions rather than quantitative assessment due to immature model and method.Combining with the model of Land Potential Productivity to regulate the effect imposed by soil and water conservation work,this paper represents one popular sustainability indicators,i.e.Ecological Footprint with some modification.Adopting the modified model,we deal with the case in Puwa,Beijing.We demonstrated the following results: during 5-year integrated management,the bio-capacity of Puwa increased by 30.9% while the ecodeficit decreased by 66.7%,from which a significant improvement of its eco-environment and sustainability is achieved.