In food industry, heme can replace nitrite and synthetic pigment in meat products; In the pharmaceutical industry, heme can be used as a semi synthetic raw material of bilirubin, and can be used to prepare specific anticancer drugs; In clinic, heme can be made into heme iron supplement. Nutritional supplement (iron fortifier) is extracted from pig blood. It is recognized by modern medicine as a biological iron source with high absorption rate and good effect for the prevention and treatment of iron deficiency anemia. It has no fishy smell of iron and does not stimulate intestines and stomach. Is the production of natural iron food, medicine, health care products, cosmetics preferred raw materials.