The normal value of average hemoglobin concentration is 320-360g/L. 312g/L is obviously lower than the normal value, which may indicate that the patient has hypochromic anemia and it is recommended to go to the hospital for further examination. The average hemoglobin concentration refers to the average value of hemoglobin contained in red blood cells in one liter of blood, and this value is lower than normal indicating that the hemoglobin in red blood cells is generally reduced, the most common is iron deficiency anemia, because the lack of hemoglobin raw material for hematopoiesis, hemoglobin can not be made, the size of red blood cells will become smaller, and the hemoglobin contained in them will also be reduced, clinically manifested as the average red blood cell The average red blood cell volume, the concentration of hemoglobin in individual red blood cells, and the average hemoglobin concentration are all low. A low average hemoglobin concentration alone cannot diagnose the disease, so it is recommended to seek medical attention in a timely manner to further identify the cause of the condition.