On October 8, 2005, 1-year-old Cheng and 2-year-old, 3-month-old You were successfully discharged from the pediatric surgery ward. Both children suffered from the same disease – congenital common bile duct cyst, the diameter of dilated common bile duct was 2.5 cm for Cheng and 10.5 cm for You. After successful laparoscopic resection of the common bile duct cyst and end-to-end bile duct jejunostomy by our pediatric surgery department, both patients have recovered. It is reported that there is no report of this operation done through laparoscopy in our province, which marks that the minimally invasive technology of our hospital has reached the leading level in China. Congenital common bile duct cyst (biliary dilatation) is the most common biliary malformation in China, manifesting as pain in the right upper abdomen, fever, and even jaundice, and ultrasound examination will reveal a cystic mass in the hilar region. Clinical observation shows that early surgery is effective. Radical resection of the common bile duct cyst and reconstruction of the biliary tract with a hepatic duct-jejunum Roux-Y anastomosis is the best procedure to treat this disease, and this radical surgery is one of the most difficult and risky operations in pediatric abdominal surgery, even with conventional open surgery. With the tacit cooperation of our anesthesiologists and operating room nurses, a surgical team led by Dr. Shaotao Tang of our pediatric surgery department performed the trans-laparoscopic radical surgery on the patient. They cut four small 0.5 cm holes in the patient’s umbilicus and abdomen respectively, placed lenses and instruments, performed cholangiography in the face of images transmitted to the TV screen, used electrodesis to separate the portal vein, hepatic artery and duodenum, and completely removed the cyst. Then, under laparoscopic surveillance, the hepatic duct and jejunum were sutured together to create a channel for the flow of bile into the intestinal cavity. The surgery lasted 7 hours and 5 hours, respectively, with less than 5 ml of bleeding. The patient recovered well after the surgery, and on the second day after the surgery, bowel function was restored and the patient was able to move around on the floor; on the seventh day after the surgery, the patient resumed normal diet and activities; the patient has now been discharged from the hospital cured. Laparoscopic radical choledochal cyst surgery overcomes the shortcomings of traditional open surgery with great damage, greatly reduces the blow to the patient, the scar is not obvious, and because of the image magnification function of the laparoscope, it makes the surgeon seem to operate under a magnifying glass, which facilitates the separation of the cyst and fine and accurate anastomosis, so as to avoid tissue damage to the maximum extent, increase the precision of the operation and reduce the risk of the operation. Laparoscopic surgery is known for its small incision, light trauma, less pain, and quick recovery. The surgery does not require special instruments such as ultrasonic knife and intracavitary anastomosis (EEA), and the cost is comparable to that of traditional surgery, which has been accepted by the majority of surgeons and patients. Domestic and foreign experts consider laparoscopic technique as the most ideal new means for the radical treatment of children with common bile duct cysts. Although laparoscopic choledochal cyst surgery takes about 1 to 2 hours longer than traditional surgery, it can obtain good intraoperative display, accurate operation, painless postoperative period, no need to open the abdomen, inconspicuous and beautiful scars, fast recovery of intestinal peristalsis after surgery, reduction of adhesions, early feeding, and normal children can be discharged from hospital 5 to 7 days after surgery. In addition to being the first in China to complete laparoscopic radical surgery of giant colon and high anal atresia, we have also recently successfully completed the difficult and high-risk laparoscopic pediatric splenectomy, laparoscopic pediatric esophageal fissure repair and Nissen folding of gastric fundus, minimally invasive surgery of funnel chest, etc. The development of these surgeries marks the leading position of our pediatric minimally invasive surgery in China. level. By 2008, the Department of Pediatric Surgery of Low Concord Hospital had completed 52 cases of laparoscopic congenital common bile duct cysts.