Anemia in pregnant women may lead to intrauterine growth restriction, fetal distress, preterm delivery or stillbirth. Increased iron requirement during pregnancy is the main cause of iron deficiency in pregnant women, coupled with insufficient intake of iron by pregnant women, it is easy to deplete the body’s iron stores resulting in anemia. When pregnant women are anemic, the placental supply and nutrients are not enough to meet the growth needs of the fetus, which can easily lead to intrauterine growth restriction, fetal distress, preterm delivery or stillbirth, etc., and at the same time, there is a certain impact on the fetus in the long term. Therefore, during pregnancy, it is necessary to pay attention to a reasonable diet, consume more lean meat, animal blood products, eggs, fresh vegetables and fruits, and also need to take drugs such as polysaccharide iron complex for iron supplementation therapy to prevent anemia in pregnant women, and on-time prenatal checkups to monitor changes in various indicators. If a pregnant woman experiences palpitations, weakness, dizziness, or a decrease in hemoglobin levels, she should visit her obstetrician for evaluation and treatment.