According to the World Health Organization, anemia is diagnosed based on the amount of hemoglobin in the body, with different target values for different ages and genders. Anemia is confirmed in adult males with hemoglobin <130g/L, in adult females with hemoglobin <120g/L, in pregnant women with hemoglobin <110g/L, in children <6 years old with hemoglobin <110g/L, and in children 6-14 years old with Diagnosis of anemia is confirmed for hemoglobin <120g/L in children. Hemoglobin is the main component of red blood cells and is composed of iron ions and pearl protein. The body is rich in protein reserves, but the iron content is limited, so most of the problems of anemia appear in iron ions, and another iron quadruple test is needed to exclude iron deficiency anemia.