Abstract:Iron-deficiency anemia was one of the highest incidence of nutrient deficiency. In recent years，domestic and foreign studies have shown that polysaccharide-iron complex as a iron supplement has the advantages of high solubility，high iron content，small stimulation to the gastrointestinal，and high biological utilization. The polysaccharide-iron complex was a kind of more effective iron supplement to prevent iron deficiency anemia，so it has been attracting more and more attention. This article mainly focused on the structural characteristics and physiological activities of polysaccharide-iron complex.