Abstract: There are seriously seismic landslide disasters in the valley areas over the years. The influencing factors of more than 100 typical loess landslides are analyzed. By combining the previous work, the landslides in valley cities of loess areas are divided into three types: homogeneous loess landslide, loess-bed rock interface landslide and loess-bed rock landslide. Through the investigation and analysis of earthquake risk, some suggestions are given. Many factors should be considered in the stability and hazard prediction of seismic loess slopes.