Abstract: Different retaining structures are analyzed for the deep excavation of Taiping Financial Center in Shenzhen, that is, circular bracing, lattice bracing and opposite bracing + gusset bracing. Finally the bracing structure of pile + gusset + support + south slope + large spacing vertical pile is selected. The project cost and construction time are saved. The beam of bracing replacement is adopted in the bracing replacement. It is in favor of waterproof construction of basement wall and filling of reserve space, and the construction time is also saved. The monitoring results indicate that the procedure of construction is safe and the deformation of the surrounding facilities is under control. These solutions may provide good reference for the design of future similar projects.