In a period of 4 years from 1970 through 1974 29 repair operations of bile ducts were performed in 27 patients. In 9 cases choledocholithiasis had been overlooked during the primary operation, in 1 case a foreign body was present in the common bile duct, in 3 cases the long-stump syndrome was diagnosed, in 4 cases injury to the common bile duct occurred during an operation and was immediately dealth with, in 12 cases postoperative stricture of the bile duct was corrected. The authors describe surgical procedures and therapeutic results. The problem of selection of the most suitable operative method is discussed.