To examine the effects of land cover change on hydrologic process, the BTOPMC model is applied to simulate the daily runoff in the study area controlled by the Huangnizhuang Hydrologic Station in the period of 1982-1986 based on four land cover scenarios. The results show that the land cover change influences the calculation of evapotranspiration and runoff obviously. Compared with the current land cover scenario, the evapotranspiration of the forest scenario increased and the runoff of it decreased. The case was opposite for woody savannas and cropland scenarios. The variation of runoff in dry season was smaller than that in rainy season under various land-cover change scenarios. Therefore, this model can evaluate and analyze the runoff response to land cover change appropriately.