The problem of recurrence of gallstones after surgery has always troubled biliary surgeons and added to the suffering of gallstone patients. First, the preoperative “positioning navigation” technology, they avoid the shortcomings of the traditional right-sided puncture technology, and create a left-sided puncture technology to make the whole bile duct clearly visible, this technology is not only cheaper than the magnetic resonance examination, and the image is clearer, can accurately determine the location of gallstones before surgery, so as to facilitate the removal of stones during surgery. Second, the “electronic eye” technology, they abandoned the traditional backward method of removing gallstones by hand, and for more than 20 years have been insisting on the application of choledochoscopy during surgery to remove all gallstones under the guidance of the “electronic eye”. Thirdly, the technique of “unblocking the ducts” is used to solve the problem of benign stenosis of the lower part of the common bile duct in some patients with gallstones, and the problem of “unblocking the ducts”. Through their improved technique, they have made the traditional difficult transduodenal Oddi sphincterotomy a simple and routine procedure that is widely used, solving the problem of “poor ducting” in these patients and avoiding recurrent obstruction due to recurrence of gallstones. For more than 20 years, the recurrence rate of gallstone patients treated by them has been extremely low, and there are very few “repeat” patients.