Just after the Chinese New Year, a large number of patients required surgical treatment for hip and knee diseases, and some of them had to undergo arthroplasty, but due to the increase in the number of surgeries and the tight blood supply, some of the surgeries could only be postponed. While actively increasing blood supply. We are also promoting autologous blood collection to solve the problem of surgery and save the patients’ cost, while reducing the potential problems caused by transfusion of allogeneic blood. Generally, unilateral total hip or total knee replacement does not require blood transfusion, but at the same time, double joint surgeries generally require 400-800ml of blood to replenish the blood lost after and during the surgery. With autologous blood recovery technology, more than 50% of the blood leaked from the wound during surgery can be recovered.