Mild iron deficiency anemia is treated with supplements such as animal offal and meat, while moderate to severe iron deficiency anemia is best treated with iron supplements and, if necessary, blood transfusions. Patients with iron deficiency anemia need iron supplements. For different degrees of anemia, there are differences in the choice of iron supplements. For mild iron deficiency anemia, it can usually be relieved by dietary supplements, such as animal liver, meat and eggs. For those with moderate anemia, dietary supplements should be combined with iron supplementation medications, such as iron dextrose and other medications. For severe iron deficiency anemia, it is recommended to go to the hospital, iron supplements at the same time for blood transfusion treatment, in order to avoid shock and other serious complications. In conclusion, when iron deficiency anemia occurs, it is necessary to clarify the cause of the disease, treat the primary disease and provide iron supplementation or blood transfusion therapy in order to achieve the goal of cure.