The North Qilian is an important tectonic and metallogenic belt in China. So far over 260 metallic ore deposits have been discovered in this area, including copper, zinc, lead, iron, gold, manganese, wolframite and chromite ore deposits, etc. These ore deposits are from early Proterozoic to late early Paleozoic and can be grouped into ten metallogenic series according to their geological environments. Most of the metallogenic series of deposits are related genetically to magmatic intrusions and eruptions. The ore forming materials of the metallogenic series for iron copper deposits in early Proterozoic were derived mainly from volcanics, indicating that the mineral bearing formation be the result of weaking of the primitive crust. The materials of the metallogenic series of chromite, copper, zinc and lead deposites in early Paleozoic came mainly from deep sources, indicating that the tectonomagmatic activition was of great depth. The materials of the metallogenic series of the early Paleozoic sedimentary mineral deposits and the structure altered Hercynian gold deposits were derived from the earlier basic volcanics.The Caledonian was an important metallogenic period when the metallogenetic processes were related to the change of tectonic environments from ocean to continent. There are big metallogenic differences between the eastern and the western part of North Qilian which are demarcated by Menyuan in Qinghai province. The distrbution of deposits was mainly controlled by the spreading rate of the premitive ocean floor in the eastern and western part of North Qilian.Therefore, metallogenesis in the North Qilian area are characterized by inheritance, polyphase, ploysource and polygenesis. The main metallogenic features is similar to that of the Qinling region.