There is an alternative treatment for common bile duct stones, where the opening of the bile duct into the intestine is found via gastroduodenoscopy, and a retrograde cannula is inserted to remove the stones from the bile duct. It is a better minimally invasive treatment because there is no need to incise the common bile duct and no need to leave drainage in place. We recommend that patients with gallbladder stones combined with bile duct stones can be treated in two steps, with ERCP first to remove the bile duct stones and then laparoscopic cholecystectomy to achieve the least trauma and fastest recovery. However, the relative cost is higher and ERCP does not guarantee 100% success. The Hepatobiliary Surgery Department of City Hospital can perform both procedures at the same time, solving the stones in two places at once. However, ERCP and EST must destroy the function of the Oddi’s sphincter, and are not recommended for patients who are too young.