Erdaokancun Silver Polymetallic Deposit is the first independent silver deposit of Heilongjiang Province.The deposit is associated with lead,zinc,manganese and other elements.The ore host strata is top Silurian-upper Devonian Niqiuhe Formation.The ore bodies mainly occur on the strata that is on the contact zone of diabase and Niqiuhe Formation.There are 2 silver polymetallic ore bodies delineated in the district,both occurring in NW fault in vein types;the metal sulfide are mostly pyrites,followed by galena and sphalerite;the silver minerals are mostly acanthite,followed by pyrargyrite and minor content of stephanite and native silver.Wall rock alteration develops in ore bodies,mainly including silicification,carbonatization,kaolinization,sericitization,epidotization,chloritization and pyritization.Among them,silicification,pyritization and sericitization are closely related to the mineralization.Strata in Niuqiuhe Formation,NWW fault,diabase vein are important geological prospecting indicators.Ag,Pb,Zn soil geochemical anomalies are important geochemical prospecting indicators.