Abstract: By analyzing Kalakulumu complex rock mass's lithofacies，rocks and minerals，petrochemistry and REE，illustrated that the rock mass has special formation environment，characteristics of complex lithology，deformation and metamorphism strongly，it belongs to a multiple complex rock mass.The main cause of the rock mass is crust melted type or crust-mantle mixed type.The contact zone's strata which located in edge of the rock mass distributed several polymetallic deposits (mine points).There is a certain genetic relationship which contains time and space between polymetallic ore formation and complex rock mass.Complex rock mass may provide a source of ore materials for the formation of some minerals.

Key words: Kalakulumu complex body, Geological and metallogenic characteristics, West Kunlun