Congenital choledochal cysts, also known as congenital bile duct dilatation, arise from abnormalities in the development of the common bile duct system and are more common in children than in adults. A small number of patients show signs of the disease only in adulthood, and it is easily confused with diseases such as cholecystitis. About 20-25% of children develop the disease in adulthood. Since it can cause recurrent biliary tract infections, or induce pancreatitis, or even produce biliary tract cancer, in modern surgery, much attention is paid to the diagnosis and treatment of congenital common bile duct cysts in childhood. Treatment options The surgery for congenital choledochal cyst has been continuously summarized and improved, and the use of cystectomy (including cholecystectomy), bile duct reconstruction, and pancreaticobiliary shunt surgery has been recognized and widely adopted by scholars at home and abroad, and is designated as the standard surgery for the treatment of congenital bile duct dilatation. However, in patients with different types of common bile duct cyst, a more reasonable surgical approach for them is still one of the current research problems. 1, open surgical treatment: including cystectomy, pancreaticobiliary shunt, dilated bile duct and cholecystectomy common hepatic duct jejunostomy Roux-Y anastomosis, cystectomy with tipped jejunostomy interposition common hepatic duct anastomosis, cyst internal drainage, cyst external drainage, liver lobectomy and liver transplantation. However, it is very traumatic and the recovery time is long, especially for children. 2.Minimally invasive surgical treatment: including laparoscopic (assisted) resection of common bile duct cyst, pancreaticobiliary shunt, laparoscopic resection of common bile duct cyst, bile duct jejunostomy and other surgical methods. Compared with traditional open surgery, they have the advantages of less damage, faster recovery, less obvious scar of abdominal incision, and clear field exposure, accurate cyst peeling, less bleeding and exact anastomosis. Compared with laparoscopic surgery, this surgical system, with its advanced microcomputer processing technology, can transform the two-dimensional images of ordinary laparoscopy into three-dimensional images, enabling the surgeon to distinguish the diseased tissues more clearly and intuitively, and to filter out the subtle tremors of the surgeon’s hands during operation, thus achieving unparalleled flexibility, precision and maneuverability during surgery. precision and maneuverability during surgery. It also shortens the patient’s hospital stay and reduces the incidence of surgical complications. This is a real benefit for pediatric patients with congenital bile duct cysts.