Most pregnant women need to take iron supplements, and the method, timing and dosage of iron supplementation depends on the condition of the pregnant woman. Usually, pregnant women who need iron supplementation are recommended to take it during or after meals to facilitate the absorption of iron and to avoid adverse reactions. Iron is an important substance that promotes the synthesis of hemoglobin in the body. If a pregnant woman suffers from iron deficiency anemia, it can lead to fetal hypoxia and even stunted growth. The best time for iron supplementation for pregnant women is around 6 months after menopause, when anemia screening is performed in the middle of pregnancy and anemia needs to be corrected by giving iron supplements. Pregnant women taking iron can experience significant digestive tract irritation, so it is recommended to take it during or after meals to effectively reduce side effects, and tea should be avoided to avoid affecting iron absorption. Usually, patients with mild iron deficiency anemia can supplement iron by eating more pig’s blood, animal offal, black fungus, spinach and other plant-based dietary therapy. For moderate to severe iron deficiency anemia, iron supplementation therapy is required. For specific iron supplementation treatment, it is recommended to use medication under the guidance of a doctor.