A 400cc blood transfusion costs over 500. 400 cc of blood means two units of red blood cells, the cost of red blood cells is 440, but when the blood transfusion, you also need to carry out blood type identification and irregular antibody screening, overall, it costs more than 500. Normally speaking, with 400 cc of blood transfusion, the patient’s hemoglobin can be increased by 10-15g/L. The degree of hemoglobin increase is related to the patient’s body weight to a certain extent, if the patient’s body weight is low, the degree of hemoglobin increase will be high, if the patient’s body weight is high, then the degree of hemoglobin increase will be low. Continuous transfusion of red blood cells can be given if necessary.