The average erythrocyte hemoglobin concentration is the concentration of hemoglobin contained in each liter of red blood cells. The average erythrocyte hemoglobin concentration is important for the diagnosis and differentiation of anemia. Low mean erythrocyte hemoglobin concentration indicates a decrease in iron in the blood, which is often associated with iron deficiency anemia, thalassemia, etc. 1, iron deficiency anemia: iron deficiency anemia will show a decrease in the number of red blood cells in the blood, a decrease in the volume of red blood cells, and a decrease in the concentration of hemoglobin, and patients can take some iron supplements, such as inorganic iron ferrous sulfate and organic iron dextrose iron, and parenteral iron supplements such as iron sucrose and 2, thalassemia: thalassemia will have reduced hemoglobin concentration, reduced red blood cell volume, abnormal red blood cell fragility and other laboratory test results, patients can take supplemental folic acid, vitamin B12 drugs to improve anemia, when there is an acute hemolytic crisis, should remove the causative factors such as red blood cell infusion to correct electrolyte disorders, acid-base imbalance. Patients may have side effects such as nausea and burning sensation in the stomach when taking iron, taking it after meals can reduce the nausea reaction; it can be taken together with vitamin C, which can promote the body’s absorption of iron; usually you can also eat more iron-containing foods, such as animal liver, milk, red dates, etc.