Abstract: Northern Sanjiang metallogenic tectonic metallogenic belt in sourth part of Qinghai Provience had experienced multi-stage complex and complete composite orogenic and transformation geoglgical processes,which have cause rich and complex metallogenic evolution and grow a series of copper,gold,lead,zinc and other metal deposits.In this paper,research suggests that the main ore-forming system of Sanjiang metallogenic ore belt inclued Fe,Cu,Pb,Zn,Ag metallogenic series are related with Triassic volcanic and Mo,Cu,Pb,Zn mineralization series are related with Cenozoic hypabyssal intrusive rocks.Pb,Zn polymetallic metallogenic Hydrothermal transformation series are related with Cenozoic magmatic rocks.These ore-forming systems represent the mineral resources exploration direction.