Land use changes in the Wei River Basin in China have impacted the water cycle. The study used a model to analyze how changes in land use affected water yield, soil water content, and evapotranspiration. Results showed a decrease in water yield and an increase in soil water content due to land use changes from 1980 to 2010. Converting cropland to grassland or forest had negative effects on soil water content and water yield, especially with reforestation. Areas with steep slopes saw clear changes in evapotranspiration when cropland was converted to grassland or forest.