Takingthe typical gravel soil accumulation landslide - Huang Lianshu landslide for study, the paper presents a deep analysis of formation mechanism and for deformation characteristics rainfall-induced landslide, to the measured terrain data, survey data, test data as the basis, the use of geoscience simulation software GeoStudio the SEEP / W module and SLOPE / W module to establish the appropriate geological model set different conditions based on rainfall-induced landslides and landslide stability calculation in different conditions. Stability calculated landslide and heavy rain storm was a significant positive correlation, the smaller the stability of 90mm sensitive response, disaster mechanism of the landslide and the destruction process of the class landslide Hazard prevention disposal and provided valuable experience.