From June 1983 to Feb. 1993, a total of 528 patients with hepatobiliary stones were surgically treated by hepatoenterostomy with a basin-typed plasty at the stump of hilar bile duct. Among them there were 220 cases suffering from cholelithiasis in the caudal lobe, with an average age of 39.1 years. Preoperative sonography, PTC, ERCP, and CT all failed to find stones in this particular location. In the 220 cases, simple caudal lobe stones accounted for 14.5%, caudal lobe stones with bile duct abnormality accounted for 46.8%, and stones with stricture of the duct for 46.4%. Surgical treatment included bile duct dilatation, cholangiotomy, and cholangioplasty and direct chilangiotomy in the caudal lobe.