As the name implies, biliary surgery is a procedure to treat gallbladder stones or gallbladder polyps without removing the gallbladder. The new minimally invasive gallbladder preservation surgery refers to exposing the gallbladder through a small laparoscopic or surgical incision, using a choledochoscope to enter the gallbladder cavity to look directly inside the gallbladder, observe the stones, remove them, or observe the polyps, remove them, and confirm the pathology to achieve the purpose of preserving the gallbladder to treat the disease. In this way, the blindness of the old method of gallbladder preservation and lithotripsy is overcome in order to reduce the recurrence of stones after surgery. Minimally invasive biliary stone extraction (polyp removal) technology is currently used to treat gallbladder stones and gallbladder polyps. The treatment of gallbladder stones and polyps with this method is the least traumatic, with small abdominal incisions, without cutting the abdominal wall muscles, the gallbladder incision can be closed in one phase, without placing a fistula, without fasting after surgery, and you can be discharged after 5-7 days of hospitalization, which preserves the gallbladder and saves time and money. 1.Why should the gallbladder be preserved? Gallbladder is an important digestive organ of human body, and some patients with gallbladder stones, especially those with gallbladder polyps, have normal gallbladder function. Therefore, the easy removal of the gallbladder and the loss of gallbladder function will attract all kinds of maladies after cholecystectomy, so it is necessary to treat gallbladder disease and preserve the gallbladder, which is in line with the concept of modern surgery to protect the function of the organ as much as possible. 2, gallbladder stone preservation surgery procedure v1w small incision bile preservation stone extraction v polyp removal w v2w laparoscopically assisted small incision biliary stone preservation surgery. v3w Complete laparoscopic biliary stone preservation extraction. 3. Indications for gallbladder stone conserving surgery, (1) symptomatic and asymptomatic single or multiple stones (2) good gallbladder function (3) gallbladder wall thickness ≤4mm (4) patency of the cystic duct and common bile duct (5) informed consent of the patient and family 4. Indications for gallbladder polyp conserving surgery v1w diameter >5mm; v2w good gallbladder function, fatty meal v two eggs w after ultrasound examination of gallbladder volume reduction ≥1M3; v3w rapid pathological section examination confirmed as benign polyps with inactive cell proliferation; v4w no bleeding in the gallbladder trauma after polyp removal