Abstract: The steel guide wall structure of underground continuous wall of suspension bridge anchorage is complicated, and greatly affected by typhoons and waves in construction, which brings great difficulties to the design and construction, and conventional simplified calculation is difficult to accurately analyze the force and deformation of the structure. For accurately analyzing the feasibility and reliability of the guide wall construction scheme, taking a suspension bridge as the case, the "steel guide wall-foundation" three-dimensional finite element numerical model was established. According to the construction order, installation of a steel guide wall, the wall slot milling condition and even the wall casting conditions were respectively simulated using numerical simulation method, the displacement and stress of steel guide wall were analyzed. According to the simulation results of the controlling conditions, the construction scheme of the steel guide wall was optimized. The results showed that the deformation and stress of the steel guide wall were small and met the design requirements within the elastic range. It is more economical and reasonable to have 5 rows of cement mixing piles on both sides of steel guide wall, the mixing piles numbers can be saved by 1/6.