Minimally invasive biliary therapy for gallbladder stones or polyps: I. Indications for surgery: 1. Diagnosis of gallbladder stones or polyps confirmed by ultrasound or other imaging tests. 2. Patients with clinical symptoms. 3. The gallbladder is visualized by Te99ECT or oral cholecystography and functions well. 4. Although Te99ECT or oral cholecystography does not visualize the gallbladder, the stones or polyps can be removed intraoperatively. Contraindications to surgery: 1. Atrophy of the gallbladder, thickening of the gallbladder wall, and disappearance of the gallbladder cavity. 2. The stones in the gallbladder duct cannot be removed or the polyps cannot be removed, and it is expected that they cannot be removed after surgery. 3. The obstruction of the gallbladder duct is confirmed by intraoperative imaging. 4. Intraoperative ultrasound or angiogram shows stones in the cystic duct, which cannot be detected by intraoperative cholangioscopy. 5. Combined with common bile duct stones.