The estimated total discharge of iron tailings in China reached about 5 billion tons by the end of the 2007,and the average iron content of the tailings at least was above 10.35%.Under no need of heavy capital investment,700 yuan/t is the bottom price of iron concentrate that the most of iron tailings can be reprocessed to recover iron.If the expenses for new tailings reservoir(dam) are considered,the necessary condition of reprocessing iron tailings is that the price of iron concentrate is above 1000 yuan/t.From current situations,it has no economic significance only to recover iron from iron tailings.Only while the price of iron concentrate is above 1000 yuan/t,the reprocessing of iron tailings can achieve economic benefit.