There may be more than one potential shear outlet or sliding surface in complex. Landslides, takingWushan to Wuxi highway as an example. Potential shear outlet is supported successively.,and the stability coefficient of the landslide after the potential shear support is analyzed by limit equilibrium method. The research showthe secondary sliding surface was still existed after the first shear outlet is supported. Then the secondary was supported, and so on. Only when finding out all the sliding surface or the shear outlets, support the slipper from the potential cut off the cut,improve the stability of the landslide,to ensure the safety of landslide reinforcement measures.