For the sheet pile wharf on soft soil whose foundation is treated by deep cement mixing (DCM)，the deformation control of sheet pile is one of the design difficulties.In this paper，a deep-water sheet piled wharf on deep soft soil is researched.Finite element simulation is carried out by PLAXIS software.The internal force and deformation characteristics of the front wall under different replacement ratios of DCM are analyzed，the deformation results of front wall from different layout of DCM and tie rods are compared，and the influence of rear preloading on the deformation of anchor sheet pile and soil is studied.Finally，the foundation treatment procedures，DCM replacement ratio and layout，and tie rod arrangement are optimized and designed.The design scheme can better limit sheet pile deformation and shorten the overall construction period while ensuring the economy of the scheme，which can provide reference for similar projects.