The Xiaoqinling Gold Field is one of the major gold mineralization clusters in China. The S60 vein, atypical representative of large⁃scale gold veins in the area, plays a decisive role in the regional mineral distribution.Investigating the characteristics and ore⁃controlling effect of the ore⁃controlling fault is of great significance. Using 3Dgeological modeling technology, this study examines the morphology, orientation, evolutionary stages, and metallogenicpatterns of the ore⁃controlling fault in the S60 vein. Results show that the fault trends NWW and has experienced multiplestages of activity, including ductile, brittle⁃ductile, and brittle deformation. The fault displays a gently undulating geometryalong strike and shows systematic variations in dip direction. These regular structural changes are closely related toorebody occurrence, with the main orebody mainly hosted in segments with dip angles ranging from 30° to 46° . Theore⁃controlling mechanism is closely linked to the migration and precipitation of ore⁃forming materials. Tensile structuralplanes facilitated the migration and accumulation of ore⁃bearing fluids, ultimately leading to mineral enrichment. Themulti⁃stage deformation of the ore⁃controlling fault had varying impacts on the formation and preservation of the S60vein. This study provides critical insights for understanding the metallogenic mechanism and evolutionary process ofthe Xiaoqinling Gold Field and offers guidance for deep ore prospecting breakthroughs.