The Hen Maiwenduer Zn-Cu polymetallic deposit of East Ujimqin Banner is located in the middle-western part of the Great Hinggan Mts., east Inner Mongolia Cu-Fe-Pb-Zn-Ag-Sn-Mo-Au metallogenic belt in later Paleozoic to Mesozoic Era. The ore bodies mainly occur in the altered fracture belt of the outer contact zone between the granite porphyry and the stratum, and are controlled by the structures obviously. The direction of NEE (70°±) structures controlled the ore body trend, and the NNW (330°±) structure was the main ore-bearing structure. The ore type mainly is vein with disseminated ore, and partially is massive (the massive sulfide).The mineralization element is mainly Zn, associated with Pb and Ag, where the Cu partially forms the independent ore body. The formation of the deposit is effected by the evolution of regional tectonic, undergoing the process of the sedimentary formation in Later Paleozoic Era, rock body emplacement and ore-bearing hydrothermal filling in Mesozoic Era.