Abstract: Regional geological background of talus along Shuifu-Maliuwan high way in Yunnan province was generalized by on-site research. The developmental properties of these talus were analyzed considering their geometric shape, material composition and forming condition, while new methods of talus classification by planal configuration, longitudinal and cross sectional morphology were presented, the talus structure was classified according to its composition and contact condition between its inner particles. Based on field investigation on talus’s developmental features and diseases, the theses also analyzed its instability mechanism and the hazard to roadbed, bridge and tunnel engineering caused by the talus during Shuifu-Maliuwan highway project . This thesis can be used as reference for geologic hazard control induced by talus during engineering construction.