In 938 patients suspected of having pancreatic or biliary tract disease, 104 patients were shown to have biliary tract cancer demonstrated by endoscopic retrograde cholangiopancreatography, at kwangju christian hospital from Sep, 1971j to Aug, 1982. Authors analyzed the biliary tract cancer and compared them with the final diagnosis, The results were as follow 1) There were 41 cases of primary CBD ca and 19 cases(46.3%) of them were located in upper portion of CBD. In CBD cancer, stenosis of CBD(58. 5%) were more common than obstructive type(41. 5%) by ERCP. Male and female ratio was 2.2: 1 and 6th decade were most common. 2) There were 5 cases of primary GB cancer. Four of them were diagnosed by ERCP and remainer were by ERCP. In all cases, liver metastasis was suspected by liver scanning. 3) There were 14 cases of primary ampulla of Vater cancer. All of them were diagnosed by ERCP except one and female(9) was more common than male(5) In 6 cases of them, liver metastasis was suspected by liver scanning and prognosis was better than other biliary tract cancer. 4) There were 22 cases of infiltrative obstructive ampullary cancer and 16 cases of them were from pancreas cancer and male(17) was more common than female(5).Nearly all of them were not indicated for surgical treatment 5) There were 22 cases of metastatic biliary due to early distant metastasis. Tract cancer and in all cases, their primary foci were pancreas and 13 cases of them were male. Most common metastatic site of biliary tract was upper portion of CBC(18) and in all cases, liver metastasis was also demonstrated by liver scanning.