A stone blockage in the cystic duct or bile duct prevents the passage of bile, and the body naturally produces a series of reactions to overcome it, such as gallbladder spasm or contraction of the lower sphincter of the common bile duct, which produces severe pain if the stone cannot be expelled with great effort. If the pain disappears as a result of the total discharge of the stone, then no treatment is needed, but this rarely happens. The majority of cases are due to the stone temporarily leaving the site of blockage, and under certain conditions, such as eating greasy food, fatigue, drinking alcohol, etc., it can come back again. Therefore, as long as the stone exists, it must be removed firmly. Bile is produced by the liver and enters the intestine through the bile ducts. The bile ducts are like a tree, the intrahepatic bile ducts are like branches, the common bile ducts are like the trunk, and bile converges from the branches into the left and right branches of the bile ducts and finally discharges into the intestine. If there is an obstruction in the trunk, the bile produced by the liver cannot be discharged and flows backwards into the bloodstream, where the bilirubin in the bile settles in the eyes and skin, manifesting itself as yellow sclera and skin staining, which is called jaundice. With stones in the bile ducts causing poor bile flow, intestinal bacteria can easily enter and multiply, producing toxins, and the body will react with chills and fever.