Abstract:Abstract: Objective To compare the clinical efficacy on choledocholithiasis between endoscope minimally invasive surgery and choledochofiberscopy and its impact on the oxidative stress and immune function in patients. Methods The subjects of this study, 90 patients with choledocholithiasis from July 2015 to December 2017, were divided into minimally invasive group and open surgery group, 45 cases in each. The minimally invasive group was treated with endoscope minimally invasive surgery, while the open surgery group choledochofiberscopy. The clinical efficacy and changes of oxidative stress parameters [superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH-Px)] and immune function indicators [percentage of CD3+, CD4+, CD8+T and CD4+/CD8+ value] before and after operation were compared between the two groups. Results The minimally invasive group had much shorter operation duration and less intraoperative blood loss than the open surgery group did (P < 0.05), seeing no difference from the latter in terms of stone-free rate (P > 0.05). The minimally invasive group took a shorter time in resuming body temperature, bowel sounds, flatus and hospital stay than the open surgery group did (P < 0.05). The VAS scores 12 h after operation, use of analgesics and incidence of complications of the minimally invasive group were much lower than those of the open surgery group (P < 0.05). No big difference was seen in serum SOD, MDA, GSH-Px of the minimally invasive group after operation as compared with those before operation (P > 0.05). 1 d after operation the open surgery group obtained much lower activity of serum SOD and GSH-px and higher MDA level as compared with those before treatment (P < 0.05). 1 d after operation both groups saw a remarkable decrease in peripheral blood CD3+, CD4+, CD8+ and CD4+/CD8+ value as compared with those before operation (P < 0.05), and the decrease of the open surgery group was more significant (P < 0.05). Conclusion In treating choledocholithiasis, both endoscope minimally invasive surgery and choledochofiberscopy are effective, but the former gives advantages of less trauma to the body, less oxidative stress and impact on the immune function, and quicker recovery.