Operative cholangiography is considered essential during biliary operation in order to mini-mise the chance of negative exploration and to demonstrate the anatomy and pathology of intra and extrahepatic biliary tree. Although many authors have evaluated and accepted various techniques for operative cholangiography. the image of operative cholangiographyis affected mainly by intrahepatic duct stones and anatomic characteristics of biliary tree. In cases of intrahepatic duct stones accurate evaluationof the operative cholangiographic finding is important for a plan of further treatment including interventional procedures. We reviewed 45 operative cholangiograms of 30 patients with intrahepatic duct stones from January 1986 to September 1988 and analysed operative cholangiographic findings with a special attention to the correlation between cholangiographic findings and the location of intrahepatic duct stones. The results were as follows, 1. Common bile duct stones were found in 72% and generalized cholangitis was combined in 43% of patient with intrahepatic duct stones. 2. Incomplete ductal filling of contrast media was the most frequent finding of left intrahepatic duct stones in operative cholangiograms with four different cholanfiogram catheters. 3. Nonfilling and partial filling were the most frequent findings; nonfilling was prevalent in right anterior and left medial ducts and partial filing was prevalent in left medial and left lateral ducts.