Abstract:On the basis of forms and characteristics of the existent deposits in Yushui Polymetallic deposit 1~# ore body(P1),sedimentary environment and ore-control structure and metallogenic model of the deposit are analyzed, the causes of deposit are analyzed:Late Paleozoic deposit is produced in Haixi depression region of Yongan Mei county,which was controlled by the ancient seabed faults limited small basin.Hercynian undersea volcanic activity,so is drenched basement,the ore-bearing rock-forming material situation brine,with rising along the ancient faults,which caused a strong vein of alteration and polymetallic mineralization in the rock fracture and on the flanking.They deposited volcano under the volcano-sedimentary rocks and massive metal seam in the local small medial sedimentary basin.In accordance with distance of fault structure and big and small of mineral dissolubility, horizontal and vertical zonation phenomenon of the metal sulfide mineral solubility formed.