Our country stipulates that hemoglobin below 100g/L in pregnant women is anemia. Because the blood volume increases with the growth of pregnancy, the density of red blood cells dilutes and the concentration of hemoglobin decreases, so as long as the hemoglobin of pregnant women is greater than 100g/L, it is not anemia. However, if the hemoglobin concentration is lower than 100g/L, it is anemia, because the fetus grows and develops rapidly during pregnancy, and if the pregnant woman eats unreasonably, it will easily cause nutrient deficiency and eventually cause anemia. The most common type of anemia in pregnant women is iron deficiency anemia, which requires iron supplementation or eating more iron-rich foods, and commonly used iron supplementation drugs include two-dimensional ferrous iron, three-dimensional ferrous iron oral solution and so on. Iron-rich foods can be more pig’s blood, pig’s liver, sheep’s blood, purple cabbage, black fungus, shiitake mushrooms, etc. Through iron supplementation medication and food therapy, the anemia of pregnant women will be significantly improved.