The overall environmental assessment of Baosteel projects includes the retrospective assessment and the forward-looking predictive environmental impact assessment through the entire construction development process of Baosteel, ranging from starting, phaser-1 project in Sep, 1985, to the end, phase-3 project in 2002. It not only provides a powerful basis for the environmental protection in Baosteel development, but also summarizes precious experience for the environmental protection in the construction & development of extra large iron and steel complexes, even the development of the iron and steel industry in China. This project was approved by the former National Bureau of Environmental Protection.