Abstract: According to a deep excavation of subway in gravelly soils, the deformation of SMW retaining structures in non-soft soils is analyzed by three-dimensional numerical analysis. At the same time, the monitoring data of the deformation of retaining structures and the settlement of adjacent ground surface during the excavation of foundation pit are analyzed. Through the comprehensive analysis, the SMW retaining structures are suitable to the gravelly soils and their stiffness is more than that of the row piles with diameter of 800 mm and pile spacing of 1400 mm. The spatial and temporal distribution laws of the deformation of retaining structures and the settlement of the adjacent ground surface are summarized. It may be useful for deformation prediction and determination of control value of similar projects in future.