Abstract: Dahongshan Copper Deposit is a volcanic exhalationtransport and depositionmetamorphic reformation type deposit,which characterized by rich mineralization and complicated genesis.Based on systematic collection of geological data of Dahongshan mining area,the occurrence and enrichment mechanism of goldsilver mineralization is obtained by combined with the field geological surveying and test results.The study results show that:①the independent goldsilver mineral are mainly occurred in chalcopyrite and pyrite;②the submarine volcanic exhalationsedimentation establish foundation for goldsilver mineralizaiton,in addition,the foldsilver mineralization is mainly occurred in third lithologic member of Manganghe Formation;③the significant positive correlation between the goldsilver mineralization and copperiron mineralization is presented,which have most mineralization internsity among I2,Ib and I3 oresection;④the goldsilver mineralization has the characteristic of stratabound,and the ore evolution strictly controlled by volcanic activity and lithogacies paleogeography,the formation lithology,wallrock alteration,geophysical characteristics can be regarded as the prospecting criteria for Dahongshan goldsilver mineralization.