Abstract: Soil-rock compound slope in the slope engineering is a typical slope type,its main feature is the interface between soil and rock often becomes a potential sliding surface of the slope,in this paper,on the background of anti-slide pile engineering of soil-rock compound slope,the calculation of landslide thrust by the traditional transfer coefficient method is improved,soil resistance before pile is calculated by elastic method,introducing the bi-parameter method,the internal force deflection differential equation of anti-slide pile is established,and the internal force and displacement calculation methods for different types anti-slide piles(rigid pile,elastic pile)are discussed,providing a new way to solve the internal force calculation problem of anti-slide pile of soil-rock compound slope effectively.Accordingly,an software which is object-oriented,formed a design,analysis,calculation and drawing computer-aided design system is prepared by VC method,improving the calculation speed and calculation accuracy significantly to achieving the optimal design for anti-slide piles,and the software is applied to the typical soil-rock compound slope engineering successfully,having reference value for similar engineering practice.