Abstract: Inclined bracing deformation has uniqueness,Using the model of beam on elastic to calculate deformation of retaining structure and the experience curve to predict the surface settlement is not safe.This paper by using finite element software PLaxis,Analyzing the characteristics of the foundation pit deformation using inclined bracing.Meanwhile,this paper proposes four methods to control the deformation of the pit.Through summarizing the large underground excavation,summed up the inclined bracing pit deformation behavior and deformation control measures.