To optimize the structural design of steel silos and ensure structural safety and economic efficiency, it is essential to understand the mechanical characteristics of steel silo under storage loads. This study analyses a circular steel silo for ingredient mixing in an actual industrial project. A precise 3D finite element model was developed using ABAQUS to simulate the structure's bearing behavior under typical operating conditions. Systematic static analysis determined stress distributions and deformations in critical components, including wall plates and stiffening ribs. These outcomes directly identify structural weaknesses and potential risk areas, providing reliable theoretical support and data for design optimization. Based on this analysis, targeted optimizations were applied to wall thickness distribution and stiffener arrangement. The goal is to effectively control material usage, reduce manufacturing costs, and simplify on-site construction while ensuring structural safety and reliability. This approach achieves significant project cost reduction and streamlined construction. The results can provide references for relevant engineering design.