This study investigates the seismic performance of anchored and non-anchored sheet pile structures using a two -dimensional finite element model. Seismic loading presents a significant challenge to the stability and integrity of sheet pile walls, which are commonly used in marine, geotechnical, and civil engineering applications. By employing the finite element method (FEM), this research simulates the dynamic response of both anchored and non-anchored configurations under various seismic conditions. Key parameters such as soil-structure interaction, material properties, and boundary conditions are meticulously modelled to reflect realistic scenarios. The study aims to elucidate the differences in behaviour between the two types of structures. focusing on the displacement, internal forces, and potential failure mechanisms. Comparative analysis reveals the advantages and limitations of each configuration, offering insights into their suitability for different seismic intensities and soil conditions. The findings contribute to the optimization of sheet pile design, enhancing their resilience against earthquakes and informing engineering practices for safer and more reliable infrastructure development.