Abstract: According to the characteristics of anti-sliding piles setup in the soil slope, Winkler model and Euler-Bernoulli beam theory, the deflection expression of the piles was deduced and it was sorted out as a function of MCubic parabolicM. The axial force and deflection acting on the piles after the soil slope achieved stability, as well as the variability of anti-sliding moment and shear force on the piles in different elements with the number of computing steps, were analysed based on this function and the combinated of computer simulation (FLAC) with the practical engineering of GYP soil slope on No.205 national highway in Shandong province.