Abstract: Eoursilo is kind of unique large silo system.The Eoursilo has good sealing property,large reserves,small floor area,and complex structural property.In this paper,a 10~5 cubic meter Eoursilo structure in a Chinese thermal power project on soft soil foundation is taken as the background,and a complete three-dimensional finite element analysis is carried out.Combined with the calculation results,the mechanical characteristics of the silo wall are analyzed and summarized.