Five land-use types were chosen to study soil anti-scourability characteristic in a small watershed called Lüergou watershed in Loess Plateau using flume method with undisturbed soil． The results showed that: (1) The order of soil anti-scourability under different land-use types was: locustland ＞ grass land ＞ terrace land ＞ orchard land ＞slope farmland． (2) Plant roots exerted significant influence on soil anti-scourability，and compared with soil without root，the anti-scourability of soil with root was obviously improved by 44． 02% as an average． (3) The soil anti-scourability decreased with the increase of gradient，especially for the range of 22° ～ 25°． (4) According to the spatial simulation of soil anti-scourability on the scale of watershed，it is greater as getting closer to the upstream of watershed and upper slope position of erosion gully，which is more obvious under locust land and grassland．