In the process of expressway construction and management, a certain amount of soil and water loss is inevitable because of complex terrain and topography where it passes, long duration, composition diversity, traffic inconvenience, and other natural and economical limitations. Taking Tajing Expressway (Jiangxi Section) which has been put into operation for many years as an example, this paper analyzed the impacts of construction process on soil and water conservation, summarized the successful practices and experience on the construction and management of soil and water conservation, and provided a reference for soil and water.