Abstract: Peak construction of large buildings in major geotechnical problems is the site stability problems,in this paper,an example of a site along the sloping level of the whole existence of sliding,sliding along the crack and local levels,covering layer of weathered rock block slide,rock collapse and surface rock,stone rolled down so dangerous form of damage,through laboratory and field tests to obtain the structural plane shear strength parameters,slope stability on the top of the conventional method and the finite element method for the quantitative assessment of the overall site stability obtained and meet the requirements of local stability of the conclusions of collapse and dangerous rock on the rock rolling stone risk taking shotcrete support measures,the experience gained in this project has a guide for similar projects.