Abstract: The Chuangershan area is located in the Xiahe-Lintan area in the northwest of the West Qinling Mountains,and is with complex geological structures and superior metallogenic conditions.According to the petrological and geochemical studies of the intrusive rocks in Chuangershan area,the intrusive rocks were enriched in light rare earth elements and had negative europium anomaly;the trace elements were enriched in large ion lithophile elements (Ba,K,Rb,etc.),relatively depleted in high field strength elements (Nb,Ta,Ti,etc.) and strongly depleted in compatible elements (Cr,Ni,Co,etc.),in general displaying the characteristics of type I granite;according to the regional tectonic background,the intrusive rocks were related to the subduction of the ancient Qin-Qi-Kun ocean basin and formed in the volcanic arc environment.These were the products of the interaction between subducted plate melt and mantle material,and were mixed with the upper crust material in the process of uplift and emplacement,which was closely related to the formation of minerals in the area.Iron,copper and gold minerals were mainly controlled by rock mass,structure and lithology.The contact zone between intermediate acid intrusive rock and limestone in the study area is a favorable ore-forming area for iron,copper and gold minerals,and has certain ore-prospecting potential.