Abstract：here are complex landslides with several layers of slipping plane in the geotechnical engineering. In this paper，a new method to analysis the multi-layers landslide is presented. Every layer of sliding masses when calculating the slope stability and landslide-thrust distribution is analyzed. The upper layer of the sliding mass is analysed by using the common transfer coefficient method. When the lower layers of the sliding masses are analysed，the weight of the upper layer but the effects of the upper mass on the layer below can be ignored. The method was applied to a practical project，and the results show：(1) the safety factor of the slope calculated by the new method is with the same as the general method；(2) because the anti-sliding pile intercepts the sliding mass，the landslide thrusts of different layers of sliding mass act on the pile separately. Therefore，the total landslide thrust is varied with different methods；(3) when the upper sliding mass has different design safety factors，the landslide-thrust of the upper mass and the total landslide-thrust are different. The calculated results by the new method make the design of anti-sliding structures more reasonable.
