The conventional deformation calculation method for sheet-pile wharves is the vertical elastic foundation beam method. Since this method does not consider factors such as the nonlinearity of the soil and the historical stress state of the soil，its deformation calculation results often exhibit large deviations. This is especially true with deep-water sheet-pile wharves，where the changes in soil stiffness caused by loading and unloading are non-negligible and thus deserve due consideration in the calculation. Resorting to the numerical simulation method，this study uses three soil constitutive models，namely the Mohr-Coulomb model，the hardening soil model，and the small-strain hardening soil model，to calculate the deformation of a deep-water steel pipe sheet-pile wharf in Nansha District，Guangzhou and compares the results with the measured data. The results show that the small-strain hardening soil model achieves high calculation accuracy and can serve as a reference for similar projects.