Objective:To study the effect of internal drainage tube and T tube in laparoscopic common bile duct exploration.Methods:The data of 103 patients who underwent laparoscopic common bile duct exploration for the treatment of choledocholithiasis from January 2016 to April 2021 in Dongguan Kanghua Hospital were analyzed, including 50 males and 53 females, aged (50.3±17.2) years old, the age range was 15 to 90 years old. A total of 103 patients were randomly divided into T tube group ( n=60), who received laparoscopic cholecystectomy + choledocholithotomy and stone removal+ T tube drainage, and self-dropping stent group ( n=43), who received laparoscopic cholecystectomy + choledocholithotomy and stone removal + placed with self-dropping stent. The operation time, intraoperative blood loss, postoperative drainage, postoperative hospital stay and incidence of postoperative complications were compared between the two groups. Results:The operation time of self-dropping stent group was (107.2±26.1) min, intraoperative blood loss 10(5, 10) ml, and postoperative hospital stay (6.5±3.5) d, which were better than those of T tube group (143.5±52.7) min, 10(10, 20) ml, (8.8±3.8) d, the differences were statistically significant (both P<0.05). There were no significant difference in postoperative drainage volume and postoperative complications between the two groups (both P>0.05). Conclusion:The internal drainage tube in laparoscopic common bile duct exploration is a safe and reliable surgical method for the treatment of choledocholithiasis, which can significantly shorten the hospitalization time of patients.