Anemia is a common clinical condition in which the volume of red blood cells in human peripheral blood is reduced below the lower limit of the normal range. Due to the complexity of red blood cell volume determination, hemoglobin concentration is often used as a clinical substitute. According to our hematologists, in sea level area, adult men with hemoglobin less than 120g/L, adult women with hemoglobin less than 110g/L, and pregnant women with hemoglobin less than 100g/L are considered to be anemic.The diagnostic standard set by WHO in 1972 considers that in the sea level area, hemoglobin less than the following levels is diagnosed as anemia.For children from 6 months to less than 6 years old, the diagnostic standard is For children 6 months to less than 6 years of age, the diagnostic standard is 110g/L, for children 6-14 years of age it is 120g/L, for adult males it is 130g/L, for adult females it is 120g/L, and for pregnant women it is 110g/L, below which anemia can be diagnosed. The above content is for reference only, specific medication, treatment, please according to the doctor’s guidance of the interview shall prevail.