Abstract: To reveal the metallogenic regularity of gold deposits in the Danghe Nanshan Area, Gansu Province, this study focuses on the Baishitougou altered cataclastic rock-type gold deposit and integrated regional geological, geophysical and geochemical data. The area is located in the western segment of the South Qilian magmatic arc, divided into north-south tectonic units by the Danghe concealed fault. The Ordovician System is the main ore-bearing and material source horizon, Caledonian intermediate-acid intrusive rocks provide metallogenic heat sources and part of ore-forming materials, and NW-SE trending faults are ore-controlling structures. The Baishitougou deposit contains 7 NW-SE trending ore veins, with core orebodies occurring in the F₂ alteration zone. Ores are divided into three types, with silicification as key mineralization alteration. Geochemically, it shows “Au-As-Sb-Hg” anomalies, and geophysically corresponds to the superposition area of gravity-aeromagnetic positive anomalies. Regional gold deposits follow the “magmatic hydrothermal-fault ore-controlling” model, with three metallogenic stages and controlled by “tectonic-stratigraphic-magmatic” factors. The prospecting direction of “Ordovician + Caledonian intrusions + NW-trending faults” is proposed to support regional exploration.