Indications for bile-conserving surgery Regardless of the presence or absence of gallstones, bile-conserving surgery can be used if the gallbladder is confirmed to be functional by clinical examination. Contraindications for biliary surgery 1.Gallbladder atrophy and disappearance of gallbladder cavity 2.Stones in the gallbladder duct cannot be removed, and it is expected that they cannot be removed after surgery 3.The gallbladder duct is confirmed to be obstructed by intraoperative imaging 4.Stones in the gallbladder duct can be seen by ultrasound or imaging during surgery, but cannot be detected by intraoperative choledochoscopy 5.In combination with common bile duct stones, the common bile duct stones should be treated before biliary surgery Gallbladder stones with or without symptoms can be treated by clinical examination to confirm the function of the gallbladder If the gallbladder is functional, biliary stone retrieval surgery can be performed.