Normally, hemoglobin 105g/L is abnormal and is considered mild anemia because the hemoglobin concentration is 120-160g/L for adult males and 110-150g/L for adult females, so hemoglobin 105g/L is abnormal and is mild anemia. In clinical practice, mild anemia can be seen in many diseases, such as iron deficiency anemia, megaloblastic anemia and mild hemolytic anemia. However, for pregnant women, especially after mid- and late pregnancy, hemoglobin 105g/L is normal. This is because after pregnancy, the blood volume increases and the hemoglobin concentration is diluted as the pregnancy grows. China stipulates that the hemoglobin concentration of pregnant women is normal if it is greater than 100g/L. Normally, hemoglobin 105g/L is abnormal, but for pregnant women hemoglobin 105g/L is normal.