Abstract: The 8.5-magnitude earthquake that occurred in Haiyuan,Ningxia,China in 1920 triggered many loess landslides.This study investigated their distribution characteristics and influencing factors using the field investigation of 642 landslide inventory points and ArcGIS software and spatial statistical analysis methods.The weight of evidence method was introduced into the loess earthquake landslide research,and the weight of each factor to the development of loess earthquake landslides was discussed.The results show that these landslides have large scale,gentle slope,relatively concentrated elevation and slope aspect.The landslides are highly correlated with the distance from river systems and faults,and the fault direction effect,hanging wall effect and near-river effect are significant.The slope aspect is the factor with the highest weight for loess earthquake landslides,while the weight of other factors for landslide development decreases in order from river distance,fault distance,elevation,slope and geomorphic type.