Abstract:Abstract: Iron is an essential element of organisms, and plays important roles in oxygen transport, intracellular respiration and many other biological metabolic pathways. Hepcidin is a key hormone that regulates iron metabolism in the body, when the body is in chronic inflammatory disease, tumor or other pathological conditions, the synthesis of hepcidin increased, and iron metabolism imbalance can caused hypoferriemia, and anemia of chronic disease (ACD). Many factors, such as erythropoietin (EPO), interleukin-6 (IL-6), growth differentiation factor 15 (GDF15) and erythroferrone (ERFE), can affect the production of hepcidin. Some tumor cells can synthesize a small amount of hepcidin too, and limit the iron excretion from tumor cells through reducing the membrane iron transporter, and promote the growth of tumor. Therefore, the strategy of influencing the generation of hepcidin to treat ACD and tumor have broad application prospects.