Solar energy has the resource characteristics of cleanlinessno pollutiondispersion and intermittence. The research results and progress of solar energy integration technology application in the photothermal iron-making, photothermal concentrate titanium white waste acid, photovoltaic steel-making and preparation of pure iron by photovoltaic electricity both at home and abroad are summarized. As an effective clean energy, solar energy is regarded having a great application prospect in the metallurgical field.