X-shaped pile is a type of heterotypic pile with inverted arch curved surfaces. Compared with rectangular and circular piles with the same area of cross-section，X-shaped pile has a longer perimeter and larger inertia moment of the section，resulting in better mechanical properties. Based on the covered sheet pile wharf structure of 32# berth in Jingtang Port，we apply X-shaped piles to replace original rectangular covered piles and study the influence of X-shaped pile on the static behavior of wharf structures. The results show that at the same central distance between piles，the moment of the front wall reduces when replacing rectangular piles with X-sectional piles，and the maximum moment of front walls is similar for two types of models at the same net distance of 1.75 m between piles. Under the same load，the displacement of the front wall is greatly correlated with the central distance between piles but hardly affected by the shape effect of the X-type pile. In contrast，the displacement of the anchor wall is hardly influenced by these two factors. The soil arching effect is directly correlated with the central and net distance between piles. This effect greatly affects the moment of the front wall，the soil press on the front wall，and the moment of covered piles. At a central distance of 4.05 m or a net distance of 1.75 m between piles，a great improvement of internal force is obtained. X-shaped piles at this spacing can be used to replace normal rectangular piles for saving construction costs.