Abstract: In recent years soil nails and pile-anchors has been adapted to pit slope engineering of urban agglomeration space. The research of deformation of soil nails and pile-anchors with excavating and stable still needs to discussing about. It is inseparable from a pit projects, which researching the regularity of deformation about supporting structure and foundation of soil nails and pile-anchors. Analyzing 1-1 section of the B43 pit project-Wandefu square for Pinggu with participated by FLAC^3D finite difference software. By compared with the actual measurement, FLAC^3D simulation can conclude some conclusion, such as the displacement of pile anchor block more than soil nails, the displacement of pile anchor increasing with excavated and the after paragraph displacement larger, while two ends displacement smaller for the pile presents itself. Additional the foundation pit can be uplift with excavating. By compared with data of actual measurement, the results by FLAC^3D is coincide.