Abstract: Abstract：The Jinchangyu ore deposit is a large-size gold deposit in eastern Hebei with mining history of more than half a century. In recent years, its resource reserves are constantly increasing. Which has aroused extensive attention among geologists. From the angle of ore-forming and ore-controlling action of the mantle branch structure, this paper briefly describes geological characteristics of the Jinchangyu gold deposit, with the emphasis placed on the source of the metallogenic material. The authors hold that the ore-forming materials were mainly derived from the boundary of the core–mantle and, through multiple evolution of mantle plume, they moved to the favorable structure and were deposited to form ore deposits. This paper emphatically discusses ore-forming and ore-controlling action of geological structure on the basis of achievements obtained in recent years. The prospecting directions in the depth and the periphery of the Jinchangyu gold deposit are pointed out.