Abstract:Hydrothermal gold ore body in Yanshan period has been found in Dahuaishu region of Luzhong area. Fractural structures with the trend of NW and vein rocks in Yanshan period have close relation with gold mineralization. Vein rocks and mineralization with the trend of NW are controlled by NW zonal fractures. Its occurrence position are accordance with R, R', P, D, T fracture system in shear belt. Fracture with the trend of NW should be a complete shear tectonic fault bundle, and structure, rock and gold mineralization are a system of effective coupling in the whole. It should be wholly recognized and combined with the characteristics of ore controlling tectonic shear zones to guide ore prospecting.