FLAC3d is used to establish the analytical model of two-stage cantilever retaining wall and arm retaining wall with the same wall height. Based on the comparison of the stresses and deformations of the two-stage cantilever retaining walls, a research has been carried out on the feasibility of assembling the two-stage cantilever retaining wall and the characteristics of stress and deformation, followed by a tentative inquiry into the effects of horizontal distance between the upper and lower walls, the depth of the upper wall basement and the strength index of the filling on the structure of the retaining wall. The results verifies the feasibility of the assembly of the two-stage stacked cantilever retaining walls. An increase of the horizontal spacing between the upper and lower walls helps to reduce the lateral deformation and stress of the retaining wall; the depth of the upper wall basement has little effect on the deformation of the retaining wall; with the increase of cohesion and internal friction angle of the filling soil, the lateral deformation of the retaining wall decreases while the vertical stress of the basement increases slightly.