Abstract: The effects of soil erosion on the soil properties of northern Loess Plateau were studied. The results show that the erosions in the front and middle parts of the slope cropland are stronger, but the erosion is weaker in the top of slope. There is linear relations among total N, alkaline hydrolysis N, available K and water erosion, tillage erosion; organic matter, available P, and cation exchange capacity are related to water erosion and tillage erosion insignificantly.