In order to solve the technical problem of deep-water sheet pile wharf on weak soil foundations, which is treated with different cement mixing ratios and cement mixing piles, and combined with the traditional single anchor sheet pile structure, the influence of combined sheet pile wharf structure is studied. The studying results of the force and deformation indicate that the reinforcement of weak soil with different cement mixing ratios can be used to strengthen the weak soil foundation for increasing the stiffness for resisting vertical and horizontal loads, and to reduce the lateral earth pressure on the front wall. With the increase of the mixing ratio, the overall effect of lateral earth pressure is increased, and the deformation of the front wall is significantly reduced. While the cement mixing pile is used to treat weak soil foundation, the mixed pile and the soil between piles are formed to coordinate the stress conditions of structure and soil. By limiting the displacement of the front wall, the internal force of the anchor rod as well as the internal force of front wall is reduced.