Abstract: Zhang Jia-shan area in Huaining County is Cu,Pb,Zn,Mo,Sn polymetallic ore zones.In this area,the ore-forming elements and pathfinder elements are well developed,and the geological characteristics are frequent magmatic activity and intense alteration.The mine deposits are mainly dominated by the O/S interlayer detachment faults,and the deposits are located between the Tangshan group's footwall of detachment faults and the upside of Kunshan group,or located in the interformational fracture zone inside Kunshan group.Argillaceous stripe marbles are found in the bottom of Tangshan group,which have advantages to the hydrothermal metasomatic due to the different lithology.Theblastooliticlimestone and the palimpsest nodular marble in Tangshan group are easy to broken,which is both of the ore-fluid channel way and the ore-fluid host structure.