In the course of patient contact, patients often ask similar questions and give examples of people who have found bile duct stones after gallbladder stone surgery several years ago. It is true that we often encounter patients who are diagnosed with common bile duct stones after gallbladder stone surgery, but is it possible to say that “the bile duct stones were removed because the gallbladder was removed and the stones were opened to the bile duct?” The answer is obviously not based on science. There is no evidence to suggest that gallbladder removal causes bile duct stones. There are two main reasons for the occurrence of bile duct stones after gallbladder stone surgery 1. 1, gallbladder stones already coexisted with common bile duct stones at the time of gallbladder stone surgery, and these common bile duct stones also fell into the bile duct from the gallbladder in most cases, and for various reasons, common bile duct stones were missed; 2, some patients really did not have common bile duct stones before surgery, but because of the thick gallbladder duct and small gallbladder stones, improper surgical operation can lead to intraoperative tiny gallbladder stones entering the common bile duct by the thick cystic duct, causing postoperative common bile duct stones. So, is there a way to prevent this from happening? It should be possible to do so. The vast majority of coexisting common bile duct stones can be prognosticated preoperatively by more careful history taking combined with reasonable imaging; secondary common bile duct stones due to surgical manipulation can also be minimized by improved surgical technique.