A total blood erythrocyte count of 4.57 x 10^12/L is normal for adult males and females; however, it is classified as decreased erythrocytes for newborns. Under normal conditions, the total number of blood erythrocytes is (4.0-5.5) × 10^12/L in adult males and (3.5-5.0) × 10^12/L in adult females; therefore, a total blood erythrocyte count of 4.57 × 10^12/L is normal. However, the total number of blood erythrocytes in newborn babies is (6.0-7.0)×10^12/L. When the total number of blood erythrocytes is 4.57×10^12/L, it is a phenomenon of erythrocytopenia, which is abnormal and suggests the existence of anemia, and it is necessary to consult a doctor in time to find out the cause and treat it actively. When the total number of red blood cells in the patient’s body increases or decreases, it is recommended to go to the hospital in time for examination and take treatment measures to avoid delaying the condition.