Abstarct: The main criteria in the design of foundation engineering foundation, set and control is the ultimate bearing capacity and soil subsidence. In other words, the foundation must be able to safely exploit the load transfer into the soil, so the soil is not only not failed but the settlement is not exceeded. To achieve this, Several different methods of mechanical processes such as compression, consolidation and chemical processes such as correction, consolidation or reinforcement elements to strengthen Soil is used. The study of materials baxsed on polystyrene with property reducing stresses due to vertical loads and reduce the burden of the lower laxyers of soil horizontal walls as insulation and vibration damper is used to reduce soil seismic settlement. Therefore, after the introduction of the walls of the foam to the walls around seeking behavior modeling using PLAXIS software under various seismic loading and the effect this has on various walls is studied. In what follows, the results will be evaluated with a model without foam wall. The results of this analysis show that the physical characteristics of different geofoam can have a significant impact in reducing the seismic settlement.