Abstract: A new relative large ore body was found under the present mining realm in a lead-zinc mine in Jiangxi.The processing mineralogy of the ore was studied in order to explore a suitable method to develop the new resources.The results showed that there were variety of complex minerals in the ore.Pb，Zn，Ag，Au，i.e.were the main valuable elements，and Pb，Zn，Ag mainly exist in galena，sphalerite，brongniardite and polybasite.Lead-zinc minerals have complex dissemination and are closely associated with each other.Sphalerite is broken into pieces with the destruction of the tectonic stress action and is cemented with calcite and pyrite.The silver minerals present in galena，which intersect the sphalerite in wormlike or micro-vein form.Galena and sphalerite are dispersed as various sizes of grains in the ore，therefore it was very difficult to liberate and separate.Finally,several issues should pay attention to during mineral processing of the ore were put forward

Key words: Lead-zinc mineral, Processing mineralogy, Characteristics of dissemination, Liberation of monomer