Abstract: Through field investigation and qualitative and quantitative analysis of tailings lefi over by history in a tailings reservoir,the engineering solved the environmental problems left over by history of the tailings reservoir by comprehensive utilization technology.The engineering carried out local modification of the original aerated concrete production line,meanwhile built a new tailings brick production line.Thus,tailings can be processed into aerated concrete and tailings brick by configuring the material,stirring,molding,steam curing and other process.Products are in line with the relevant national standards.The engineering can not only make waste profitable,also achieve good economic and environmental benefits.