Biliary atresia can usually only be relieved with the Gessy procedure, and is more difficult to fully heal. Gessy surgery is usually the first choice of surgery for biliary atresia, usually for intrahepatic biliary atresia, mainly through biliary anastomosis, to alleviate the symptoms of biliary atresia, including hepatic hilar fibrous mass stripping, hepatic hilar jejunoileal anastomosis and reconstruction of jejunoileal circuits, which will help to recover the function of the liver and subside jaundice. Generally, after surgery, bile can usually be discharged smoothly, but it can only alleviate the condition, not achieve a complete cure, and it is only effective for part of the biliary atresia. It is recommended to have a detailed examination before surgery. If the biliary atresia is extrahepatic, it is usually treated by resection of the atretic bile duct and reconstruction of the bile duct. This procedure is only effective for some children and can also buy time for the next step of liver transplantation.