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To determine the metallogenic characteristics and ore- prospecting potential of Naganchu area in Ewenke Banner of Inner Mongolia��the geological features and genetic types have been studied��and geophysical and geochemical survey were carried on�� The results indicate that since the Phanerozoic��this area experienced multi- stage tectonic- magmatism��which led to favorable ore- forming geological conditions for endogenous polymetallic mineralization��such as volcanic- clastic strata of Daminshan Formation��faults and fractures in NE trending��as well as mediate- acid intrusions during the Yanshanian�� Polymetallic ore bodies discovered in this area mainly occur in the volcanic- clastic Damin Formation and obviously controlled by the NE trending faults�� The ore has similar mineral assemblages��ore textures and ore structures as ones in mesoepithermal magmatic polymetallic ore�� Inte- grated information indicates that the Naganchu area has favorable Ag-Cu polymetallic mineralization prospect�� Based on soil geochemical survey in scale of 1�� 100 00��induced polarization intermediate gradient survey and ore- finding criterions concluded in this paper��there are 8 geochemical anomalies determined��in which 4 anomalies can be listed as the most favorable in exploration target areas��