A conclusion is drawn that,in southern Jingyang County in Shaanxi Province,active conformations,earthquake faults,rock and soil layers and river erosion are the primary cuases of geological hazards.Intense human activities,particularly irrigation,also contribute to it.After analyzing the distribution and formation processes of cliff collapse and landslide,which are typical geological hazard phenomena in the loessial highlands in Guanzhong area of Shaanxi Province,prevention measures and predictions methods are put forward.