In the all processing of pipe constructing and laying, vegetation-eliminated and earth surface avulsed and soil piled incompact resulted in soil erosion more seriously. According to the character of pipeline constructing and laying and the local environment of the loess hilly and gully area in Shaanxi Province, the Liuping to Yaodian oil transportation pipe is taken as an example to forecast the amount of soil loss which includes discarding soil and dregs, destroying original landforms. To induce and avoid the loss, some integret-ed measures, such as ecological engineering and other kinds of measures, are put forward accordingly.