In the case of single gallbladder stones, two types of surgery can be considered: the first is cholecystectomy, which preserves the gallbladder and removes stones in the gallbladder, but the chance of stone recurrence increases after the surgery; the other way is laparoscopic cholecystectomy, after this type of surgery, the patient has basically no chance of gallbladder stones, but stones can occur in the common bile duct or common hepatic duct. In the case of stones in the common hepatic duct, it depends on whether the stones are in the liver or in the confluence of the left and right hepatic ducts. If the stone is in the common bile duct, there are two options: one option is to open the common bile duct and remove the stone for T-tube drainage; the other option is to remove the stone by ERCP and place a nasobiliary duct for drainage.