Abstract:To evaluate the clinical efficacy and safety of laser and electrohydraulic lithotripsy (EHL) under peroral cholangioscopy for treating large common bile duct (CBD) stones, a retrospective study was conducted on 69 patients with large CBD stones treated with endoscopic retrograde cholangiopancreatography (ERCP) combined with peroral cholangioscopy-guided lithotripsy at the Digestive Center of Jilin City People"s Hospital from January 2022 to February 2025. Patients were divided into a laser group and an EHL group based on the lithotripsy method used. Primary outcomes included technical success rate, procedure time, and incidence of short-term complications. Secondary outcomes included clinical data before and after treatment, and postoperative management. The laser group comprised 40 patients and the EHL group 29 patients. There were no statistically significant differences in baseline characteristics between the two groups (P > 0.05). Regarding the technical success rate, both the laser lithotripsy group and the electrohydraulic lithotripsy group achieved technical success in 100.0% of cases, with no statistically significant difference (P > 0.05). In the electrohydraulic lithotripsy group, the ERCP procedure time was 53.00 (43.00, 70.00) min, and the energy lithotripsy time was 23.00 (17.00, 39.00) min; in the laser lithotripsy group, the ERCP procedure time were 68.00 (50.00, 80.50) min, and the energy lithotripsy time was 35.00 (27.75, 40.75) min. Both the ERCP procedure time and energy lithotripsy time were significantly shorter in the electrohydraulic lithotripsy group than in the laser lithotripsy group (Z = 2.073, P = 0.038; Z = 2.262, P = 0.024, respectively). For short-term postoperative complications, the incidences of intraoperative and postoperative hemorrhage were 0.0% (0/40) in the laser lithotripsy group and 17.2% (5/29) in the electrohydraulic lithotripsy group, with the latter exhibiting a significantly higher hemorrhage incidence (P = 0.011). No statistically significant differences were observed between the two groups in the incidences of pancreatitis, cholecystitis, and perforation (P > 0.05). Postoperative biliary drainage was performed in 37 cases in the laser lithotripsy group and 26 cases in the electrohydraulic lithotripsy group. In the treatment of giant common bile duct stones via energy lithotripsy under peroral cholangiopancreatoscopy, electrohydraulic lithotripsy and laser lithotripsy yielded comparable technical success rates. Electrohydraulic lithotripsy was associated with shorter procedural durations but a less favorable safety profile compared with laser lithotripsy. Therefore, the choice of lithotripsy modality should be tailored to the clinical characteristics.