It is good to take iron supplements such as ferrous sulfate, ferrous succinate and polysaccharide iron complex for anemia during pregnancy. 1. Ferrous sulfate: the iron salt of ferrous sulfate is absorbed in the duodenum and upper jejunum in the form of Fe2+. Iron absorption and operation increase in iron deficiency anemia, which can increase from the normal 10% to 20% to 30%. It is better absorbed and suitable for pregnancy. 2. Ferrous fumarate: Ferrous fumarate iron is absorbed in the form of divalent iron and acts in the form of trivalent iron, which is characterized by higher iron content, faster effect and less adverse reactions, suitable for pregnancy. 3. Ferrioxamine Citrate: This product is a trivalent iron preparation, which must be transformed into divalent iron under the action of gastric acid in order to be absorbed. It is characterized by mild action and no irritation. Due to low iron content, it is not applicable to cases of severe anemia and is suitable for the treatment of anemia during pregnancy. 4. Iron dextrose: soluble iron, small gastrointestinal stimulation, iron warm, easy to absorb, suitable for pregnancy. Pregnant women with anemia, should monitor blood routine, choose the appropriate efficacy of iron. If the anemia is severe, you need to actively hospital consultation to clarify the cause and treatment.