Introduction to the procedure According to the donor liver implantation site, it can be divided into in situ liver transplantation and allogeneic liver transplantation. In situ liver transplantation can be divided into classical liver transplantation and backpack liver transplantation according to the anastomosis between the vein of the donor liver and the inferior vena cava of the recipient. In order to solve the problems of donor liver shortage and liver transplantation in children, living partial liver transplantation, reduced volume liver transplantation, split (split) liver transplantation, and domino liver transplantation have emerged one after another. In addition, there are also adjuvant liver transplantation, combined transplantation of liver with other organs such as heart and kidney, etc. The most performed transplantation worldwide is allogeneic in situ liver transplantation, which is commonly known as liver transplantation. In short, it is the removal of the patient’s diseased liver and the implantation of the donor liver into the recipient’s (patient’s) original liver site according to the normal anatomy of the human body.