Most common bile duct stones are located in the middle and lower part of the common bile duct. However, as the stones increase and enlarge and the common bile duct dilates and stones accumulate or move up and down, they often involve the common hepatic duct. The meaning of common bile duct stones should actually include the entire extrahepatic bile duct stones including the common hepatic duct. The origin of common bile duct stones is divided into primary and secondary. Primary common bile duct stones are components of primary bile duct stones, which can form in the common bile duct or stones originating from the intrahepatic bile duct descending into the common bile duct; secondary common bile duct stones are stones originating from the gallbladder and descending through the cystic duct into the common bile duct. Pathogenesis 1. Secondary common bile duct stones are basically the same or similar in shape, size and nature to coexisting gallbladder stones. If the diameter of multiple stones in the gallbladder is small and the cystic duct is obviously dilated, the stones can enter the common bile duct, common hepatic duct or left and right hepatic ducts in large numbers. 2.Primary common bile duct stones are primary bile duct stones that occur in the common bile duct, and the cause and formation mechanism are not fully understood. The current findings suggest that these stones are closely related to biliary tract infection, biliary stasis, and biliary parasitosis. The stones are brownish-black in appearance, soft, friable, and vary in shape, size, and number. Some of them look like fine sand or unshaped mud, so they are called “mud-like stones”. These stones are pigmented stones mainly composed of calcium bilirubin. The main components are bilirubin, biliverdin and a small amount of cholesterol, as well as calcium, sodium, potassium, phosphorus, magnesium and other minerals and a variety of trace elements. Among the minerals, calcium ions have the highest content and are easily combined with bilirubin to form calcium bilirubin, in addition to a variety of proteins and mucins forming a reticular scaffold. Some of them are visible under the microscope, such as the shell skin of parasites, eggs and bacterial aggregates. Why is it an untimely bomb? 1, because the common bile duct stones can easily lead to obstruction of the common bile duct and pancreatic duct, causing acute obstructive purulent cholangitis or acute pancreatitis, which have rapid onset, rapid progression and high mortality; 2, when the common bile duct stones cause bile duct obstruction, there is no pattern, cannot be prevented, and may attack at any time; 3, if the patient is accompanied by other underlying diseases, such as diabetes, serious cardiovascular disease, etc., once the acute attack The condition is often difficult to control and endangers the patient’s life. Therefore, patients with common bile duct stones should also choose to have elective surgery as early as possible when they are in good health, so that the risk of surgery can be minimized. Dietary care for common bile duct stones Patients with cholecystitis and gallstones (also required after surgery) must be light in their diet mainly, not binge drinking, overeating, forbidden large fish, large meat, large oil, high fat, high cholesterol, fried and deep-fried food, alcohol. There are not many requirements in terms of work and rest, just pay attention not to be too strenuous. Chronic cholecystitis, gallstones acute attack must be fasting, anti-inflammatory, do not use painkillers (pain relief will cover up the condition, causing misjudgment caused by misdiagnosis), such as fever, severe pain emergency situation must go to the hospital, not recommended at home to deal with, treatment, that will only delay, increase the pain, increase the risk!