Abstract: A large population and dense urban centers of the construction of the building subway, Subway Deep Foundation Pit engineering of deformation and the structure directly affects the safe use of surrounding buildings. Taking the practical project for example, monitoring the deformation and steel support axial forces of foundation pit structure. Through the practical engineering calculations, Gen-Slope numerical simulation data, design data and comparison of the actual test data, Discuss the various types of construction factors on the deformation of Retaining Structure and Construction of the significance Of information technology