This study evaluates the clinical application of cholangiojejunostomy in the surgical treatment of cholelithiasis with Moderate dilatation of common bile duct. Half of participants will receive hepatectomy, cholangiojejunostomy and T-tube Drainage, while the other half will receive hepatectomy and T-tube Drainage.

Inclusion Criteria:

• Hepatic bile duct stone disease, need surgery
• No residual stones in the operation
• Extrahepatic bile duct dilatation, 15-30 mm in diam.
• No relaxation or stenosis of the sphincter of Oddi

Exclusion Criteria:

• Patient involuntary
• Surgical treatment can not be performed because of various reasons.
• Intrahepatic and extrahepatic bile duct stones can not be taken away
• with other biliary tract diseases, such as bile duct cancer
• Oddi sphincter relaxation or stenosis
• loss to follow-up