Xiawei in Yishui county locates in west part of Yishu fault belt.The characteristics of zinc and multi-elements mineralization is obvious in this area.Its countryrocks are Cambrian Zhangxia formation in Mezoic Period. Basic magmatic ore-bearing fluid intruded into the shale in the upper part of Cambrian Zhangxia formation,and formed the deposit.This deposit belongs to carbonate rock filling-replacement type with medium-low temperature.