Abstract:Abstract: Objective?To study the role and significance of transparent cap assisted choledochoscopy in endoscopic gallbladder-preserving surgery.?Methods?A retrospective analysis of 100 patients who underwent endoscopic gallbladder-preserving surgery from January 2018 to September 2018, 50 patients underwent laparoscopic choledochoscopy and choledochoscopy, and 50 patients underwent laparoscopic combined with transparent cap-assisted choledochoscopy. By laparoscopic choledochoscopy combined with choledochoscopy assisted or not with a transparent cap. The difference in the time of gallbladder exploration, the incidence of surgical complications, the incidence of adverse reactions and the recurrence of stones within 3 months after surgery were compared.?Results?One patient developed biliary leak after laparoscopic combined with transparent cap-assisted choledochoscopy. No injury such as gallbladder perforation, cystic duct hemorrhage, and common bile duct injury were found in the two groups due to choledochoscopy. Patients who underwent laparoscope combined with choledochoscopy for gallbladder-preserving surgery were of an average of (27.96 ± 12.24) minutes for gallbladder exploration, 2 cases of adverse reactions after operation, and 8 cases of stone recurrence within 3 months of follow-up; Patients treated with laparoscope combined with transparent cap assisted in choledochoscopy, were of an average of (12.04 ± 6.01) minutes for gallbladder exploration, 2 cases of adverse reactions occurred after operation, and 1 case of stone recurrence within 3 months of follow-up. The results of two groups were significant different in the time of gallbladder exploration and the recurrence rate of stones within 3 months of follow-up. There was no significant difference between the two groups in the incidence of surgical complications and adverse reactions.?Conclusion?Compared with laparoscope combined with choledochoscopy, transparent cap-assisted choledochoscopy has a significant advantage in endoscopic gallbladder-preserving surgery, which would be widely used in it.