In order to interpret the real stress characteristics of sheet-pile wharf with relieving platform, we carried out a numerical simulation on it by software PLAXIS 2D, and obtained the displacement of wharf, the moment of front wall, the axial force of piles and the overall factor of safety during the construction state and the service state. Considering the nonlinear characteristics of soil and interaction between front sheet-pile and soil, this method agrees well with the practical engineering. The comparison between results of the conventional elastic foundation beam method and the calculated results proves its feasibility for the analysis of sheet-pile wharf with relieving platform, thus may serve as reference for similar projects.