Bile-intestinal anastomosis is the most common and important procedure for the treatment of various benign and malignant diseases of the biliary system, but bile-intestinal anastomotic stenosis is the most serious complication after bile-intestinal anastomosis, often resulting in serious biliary tract infection and even death by shock. Biliary-intestinal anastomotic stricture has become the most important cause directly affecting the long-term survival and prognosis of patients. At present, the main methods of treating biliary-intestinal anastomotic strictures at home and abroad are: 1) traditional reopening or multiple open-heart surgery. The anastomosis is revealed by direct open surgery, and the anastomosis is reopened and then reanastomosed. The problem is that the patient’s abdominal wall and abdominal cavity adhesions are so severe after multiple surgeries that the surgery is very difficult and the risk of damaging other organs and tissues is so high that almost no surgeon dares to touch this surgery anymore. Moreover, the long-term outcome of anastomotic patency after surgery is poor. 2) Percutaneous transhepatic balloon dilatation angioplasty. The bile duct is percutaneously punctured through the liver to establish access to the bile-intestinal anastomotic stenosis, and the stenosis is dilated with a balloon or knife-bearing balloon under x-ray. The disadvantages are that the procedure cannot be performed under direct vision, the dilation site is inaccurate, repeated dilation is required, the cost is high, the stenosis ring cannot be cut off, or there is a risk of hemorrhage from excessive incision, and the long-term outcome is poor. In our department, after a long period of experience in percutaneous transhepatic cholangioscopy for stone extraction, we recently developed percutaneous transhepatic cholangioscopy-incision plasty (PTCS-IP) for bile duct obstruction, and the patient was discharged home after three days. The patient no longer has biliary tract infection and abdominal pain, and the recurrence rate of intrahepatic bile duct stones is significantly reduced. Our minimally invasive hepatobiliary surgery team has made significant progress in the treatment of intrahepatic bile duct stones and bile-intestinal anastomosis stenosis by minimally invasive surgery, and the clinical short-term and long-term results are significantly better than those of biliary balloon dilatation.