Recently, Tianjin patient Liu Lin had a lobectomy pulmonary artery angioplasty for lung cancer, but unlike other patients, the 400 ml of blood he used in the surgery was all drawn from himself before the operation. Experts say that autologous blood transfusion saves money and prevents cross-infection of diseases. Since 1999, when the hospital started transfusion of autologous stock blood, it has transfused autologous blood for more than 1,000 surgical patients, reducing the annual average amount of allogeneic blood used per case to less than 50 ml, greatly reducing the amount of allogeneic blood used, eliminating cross-infection and complications caused by surgical transfusion, and also reducing the financial burden on patients. At present, the blood supply is relatively tight. For patients who are in good health, under 70 years old, and do not have anemia and need surgical treatment, the hospital usually collects 200 ml or 400 ml of autologous blood in two separate occasions 5 days before surgery, depending on the size of the surgery and the bleeding situation, and stores it for backup. If the patient bleeds excessively during surgery and needs blood, the preoperative autologous blood is fed into the patient, and if the bleeding is less and does not require blood transfusion, it is also transfused back to the patient after surgery. The transfusion of autologous blood not only supplements the shortage of clinical medical blood, but also eliminates cross-infection to avoid the spread of diseases caused by blood transfusion, and reduces the economic burden of patients. At the same time, autologous blood collection helps to improve one’s own hematopoietic function, which is conducive to recovery after surgery.