Fujian Sangang is the starting point of Fujian's heavy industry.This paper,through consulting relevant documents in the archives and combining with current research,combs the historical evolution of Sanming Iron and Steel Plant from its inception to Fujian Sangang Group,analyzes its historical,scientific,and social values,enriches case studies of Fujian's industrial heritage,and provides a basis for the protection of industrial heritage with value protection as the core.