Abstract: Five working conditions of model tests on the inclined retaining piles in a foundation pit are simulated respectively by means of the numerical simulation software FLAC^3D. The variation laws of the horizontal displacement of pile top and the bending moment along the pile shaft with the excavation of the foundation pit under different supporting patterns and pile arrangements are obtained. The bearing behaviors of the inclined retaining piles under different working conditions are compared and analyzed. The research indicates that the results of the numerical simulation basically agree with those of the model tests, which verifies the reliability of the conclusions drawn from the model tests and the superiority of the inclined retaining piles to the traditional vertical retaining piles in the foundation pit. This research provides theoretical basis for the popularization and application of the inclined retaining piles and offers certain references for their design and calculation.