Objective To investigate the clinical efficacy and complications of endoscopic retrograde cholangiopancreatography (ERCP) in the treatment of common bile duct stones. Methods Cases received ERCP therapy from January 2012 to January 2015 were studied retrospectively,and evaluated the safety and efficacy of therapeutic ERCP in patients with common bile duct calculi. Results 359 Cases of patients with common bile duct stones treated successfully with 347 cases,among them 9 cases unable to implementation of ERCP because of bad surgery tolerance,3 cases of intraoperative perforation to have surgical operation treatment. The stones were removed completely one time in 311 cases(89.6%). More than two times removing net calculi in 27 cases(7.8%). 9 cases were placed biliary stent (2.6%). Postoperative total bilirubin ERCP:61.7 ±103.8 μmol / l; Postoperative bilirubin direct: 34.7±59.6 μmol/l; Postoperative ALT:62.8±74.2 U/L; Postoperative AST: 48.3±61 U/L; Postoperative 2 h blood amylase was 115±162 U/L. It showed no significant difference (P＞0.05).24 h blood amylase was 124.7±215.8 U/L,there was significant difference compared with before operation(P＜0.05). Postoperative chills,fever, pain,jaundice have different degrees of ease. Postoperative liver function was improved significantly(P＜0.05). The postoperative average length of stay in common bile duct stones was 4～ 6 days. Complications occurred in 16 cases,including 6 cases of acute pancreatitis,5 cases of acute cholangitis,3 cases of bleeding,perforation in 2 cases. After treatment they were cured and discharged. Conclusion ERCP is safe,effective in treatment of common bile duct stones. It is an important means in treatment in bile duct diseases