Abstract: Shear strength parameters of landslide sliding zone soil are the most important and basic parameters for landslide stable analysis and governance engineering design,and its size and changes can directly influence the stability calculation of landslide,and then we can obtain different results and be involved in effectiveness of control measures.The paper is about the determination of shear strength parameters,mainly comprehensive determination of shear strenghth of Jinle lanslide slip zone by laboratory test results、field shear test of landslide slip layer、back analysis method and theory of analogy comparison,and it is pointed out that the determination of shear strength parameters of landslide sliding zone soil must use various approachs.