In early February, a patient with gallbladder stones combined with common bile duct stones came to our general surgery department for minimally invasive bile duct surgery. Under the leadership of chief physician Zhang Xueli, the patient underwent a comprehensive preoperative examination and was diagnosed with “multiple gallbladder stones with cholecystitis and common bile duct stones”. The surgery was planned to be performed by “double-laparoscopy + choledochoscopy”. After thorough preoperative preparation, the patient was operated under general anesthesia. The cholecystectomy was first performed laparoscopically, and the anterior wall of the common bile duct was incised after finding and confirming the common bile duct, and the electronic choledochoscope was entered into the abdominal cavity through the perforation hole in the abdominal wall. No stone was found in the common hepatic duct and the left and right hepatic ducts on upward exploration, and then on downward exploration, a 1.2-cm-sized stone was found in the lower end of the common bile duct, and the stone was successfully removed by placing a lithotripsy mesh blue. The choledochoscope again explored the bile duct, and no stone was found. A “T” shaped tube was placed in the common bile duct, and the incision of the common bile duct was sutured. Intraoperative cholangiography was then performed through the “T” duct, which showed that there were no residual stones in the intra- and extra-hepatic bile ducts. The gallbladder and common bile duct stones were placed in a specimen bag and removed through the abdominal wall operation hole. The operation went smoothly, and the patient recovered well after surgery with mild pain and was able to get out of bed that night. There were no postoperative complications, and the patient was discharged 4 days after surgery. The operation of “double-scope combination” for the treatment of common bile duct stones was a complete success. Bile duct stone is a common and frequent disease in Fengxian area, there is no effective treatment for stone removal, most patients need surgery. There are two methods of surgical treatment, namely transabdominal choledochotomy for stone extraction and transduodenoscopic sphincter of Oddi for stone extraction. The latter surgery requires experienced operators and is prone to failure of stone extraction, with patients suffering for nothing and a considerable cost; at the same time, because of biliary sphincterotomy, the intestinal contents are prone to reflux to the bile duct after stone extraction, which can lead to retrograde biliary infection and acute pancreatitis, and these factors are prone to complications such as stone recurrence. In addition, this type of surgery requires large technical equipment and disposable materials, which are expensive and therefore not yet popular. The former can be divided into traditional open surgery and combined laparoscopic choledochoscopic lithotripsy. Traditional open surgery requires an incision (about 15 cm) in the abdomen to perform the surgery. The surgery is very traumatic, with slow recovery and long hospital stay of about 2-3 weeks, causing great pain to the patient and increasing the financial burden to the family. The combined laparoscopic choledochoscopic lithotomy can complete both cholecystectomy and choledochotomy in one operation, which is less traumatic, less painful and quicker to recover, and the patient can be discharged in 3-4 days after the operation, which greatly shortens the hospital stay and the treatment cost is relatively low. Only two 1-cm-long incisions and two 0.5-cm-long incisions (the 1-cm incision at the umbilicus is almost invisible) are left on the patient’s abdominal wall, thus providing a very good cosmetic effect. However, the operation is technically difficult and requires a good biliary surgery foundation as well as skilled laparoscopic surgical techniques, so it is not yet widely performed, and only a few hospitals can perform it more widely. Dr. Zhang Xueli, the chief of surgery, has nearly 20 years of clinical experience in surgery and minimally invasive surgery in a tertiary hospital, and has performed more than 10 new techniques and projects, including lumpectomy for rectal and colon cancer and lumpectomy for gastric cancer.