Bile is secreted continuously by the liver cells, and if there is a gallbladder, it is stored in the gallbladder during the non-digestive period for further concentration and storage. When humans eat a high-protein diet or a high-fat diet, it is discharged into the duodenal lumen by the duodenal papilla and the bile duct to emulsify fats and promote the absorption of fat-soluble vitamins. Bile in the duodenum neutralizes some of the gastric acid. Bile is one of the more important digestive fluids in the body, and its main function is to emulsify fats and promote the absorption of vitamins. Usually, if people do not have gallbladder stones, they usually have the function of gallbladder, which is like a reservoir on the river and has the function of water storage. However, some patients with gallbladder infection and gallbladder stones have had their gallbladder removed, but the patient’s liver cells still secrete bile, and postoperative patients should eat fatty foods in moderation to facilitate the excretion of bile in the common bile duct and common hepatic duct to avoid the possibility of further formation of common bile duct stones.