Abstract: DX Pile is a belled cast in-situ concrete pile with multi-branch features. To analyze its bearing mechanism, a numerical simulation is made with the FEM in the paper. The soil is modeled with typical medium sand. The stress-strain characteristics of the soil near the pile and the load transfer mode of the DX Pile are studied. The stress and displacement contours are presented. The effects of branch space, branch number and branch shape on the bearing capacity of DX pile are discussed. Results show that a majority of load of pile is borne by the branches. The study could provide a reference for the bearing capacity design of DX Piles.