Abstract: According to the geology of a cut slope of soft rockmass with clay in Hennan Province, the reasons of its landslide are analysed,and one effective scheme based on prestressing rockbolt is designed considering the characteristic of soft rockmass with clay.A numerical model of Lagrange finite-difference has been used to analyze the stability of slope before and after construction.The results of numerical analysising and montoring show that the prestressing bolts perform good loading-capacity,and the slope is very stable.It proves that the comprehensive reinforcement scheme has an extent value to the similar engineering.