Anemia refers to a condition in which the total volume of red blood cells in the circulating blood is reduced below normal levels, resulting in anemia. Iron deficiency anemia is a type of anemia caused by a lack of hematopoietic raw materials. Iron deficiency anemia occurs when the body's stored iron is depleted and cannot meet the needs for normal red blood cell production. As the most common type of red blood cell disease, iron deficiency anemia falls within the category of hematology. Therefore, patients with iron deficiency anemia should seek specialized consultation in the department of hematology. Furthermore, we recommend seeking medical advice as early as possible since moderate to severe iron deficiency anemia can lead to a series of circulatory disorders, thereby exacerbating the condition.