Transduodenoscopy (ERCP) is currently the preferred treatment for common bile duct stones: like gastroscopy, an electronic duodenoscope is inserted through the mouth, through the esophagus, stomach, and duodenum to the duodenal papilla (the opening of the biliopancreatic duct to the duodenum), and then imaging is performed for accurate diagnosis, followed by treatment according to the size of the stone: for stones <1 cm, the papillary sphincter can be incised or For smaller stones or small stones crushed by lithotripter, it is often difficult to remove the stones with the mesh basket, so the stones can be removed with the lithotripter airbag; for choledochal stones >1 cm, the lithotripter mesh basket must be used, and the operation is similar to the mesh basket. The procedure is similar to that of net basket lithotripsy, in which the stones are crushed and then removed by lithotripsy basket or lithotripsy balloon after they are turned into small stones. If the patient has had surgery on the upper gastrointestinal tract, such as the stomach, and other conditions, transduodenoscopic (ERCP) treatment is not suitable, surgical treatment such as laparoscopic or traditional open choledochotomy and choledointestinal anastomosis can be performed.