Elevation is an important factor affecting runoff and sediment yield. In this study, a GIS-based dynamic sediment yield model based on the USLE equation was established to evaluate impacts of elevation on sediment yield in the Yanhe River watershed from 1995 to 2012. Results indicate that: 1) The dynamic model considering hydrological conditions and land management activities can be used as an effective tool to evaluate annual sediment yield changes of the hilly and gully region, Chinese Loess Plateau; 2) The main contribution ratios of each sediment yield modulus are all dominated by elevation of 900 similar to 1500 m in 1995. The highest contribution ratio of different sediment yield modulus has a gradual transferring trend from low to high intensity with the increase of elevation. 3) Comparing with 1995, the contribution ratios for the sediment yield modulus of 0-40 t/hm(2) are mainly dominated by elevation of 938.9 similar to 1512.8 m in 2010, and the highest contribution ratio of each elevation changes with different sediment yield modulus. Almost all contribution ratios for each elevation are basically decreased with the increase of sediment yield modulus. Results may provide scientific basis for regional land management of the Loess Plateau.