There are many Mafic - ultramafic rock masses distributed in the Beishanbei belt of East Tianshan-Gansu Province, which are jointly controlled by Kangguel-Huangshan fault. It has been proved that this belt is an important origin of magmatic Cu-Ni- (PGE) sulfide deposit with favorable regional metallogenic geological conditions. The Third Exploration Institute of Gansu Provincial Bureau of Geology and Mineral Resources, through the implementation of the provincial geological exploration fund project, discovered for the first time a small magmatic melting type Cu-Ni deposit in the Beishan North Belt. The ore form is complex, the deep mineralization needs to be further verified, and it has the potential to become a medium Cu-Ni sulfide deposit. The discovery of this deposit is of great significance to expand the prospecting idea and direction of the Cu-Ni deposit in the Beishan North Belt.