Transumbilical single-hole scarless cholelithiasis not only preserves the gallbladder, but also leaves no scars on the abdomen after surgery, with excellent cosmetic effects. Indications for scarless cholecystectomy: 1. Patients with asymptomatic gallbladder stones. 2.The number of gallbladder stones is about 1-3, but gallbladder preservation is not recommended for excessive number of multiple stones. 3.No combined polyps. 4.Young women with certain requirements for beauty. Hospitalization time: 3-5 days