<p>This study employs numerical simulations to examine the variation of flow-accelerated corrosion (FAC) within the globe valve under different structural parameters. Wall shear stress (WSS) is utilized to characterize the FAC rate, and the influence of the spool and valve cage on the internal flow field and FAC is analyzed. Based on these simulations, the globe valve structure was improved through parametric variation and design adjustments, and the impact of different structural configurations on the internal flow characteristics and corrosion inhibition was thoroughly examined. Ultimately, the optimal configuration was identified among the various structural modification schemes. The results indicate that compared with the original structure, only optimizing the spool shape or only setting the valve cage has limitations on the inhibition of the FAC, while a combined approach of setting the valve cage and optimizing the spool shape effectively inhibits the FAC.</p>