Residual biliary stone can be effectively treated by nonoperative procedure using steerable cahteter and basket in the recent year. We analysed the 27 cases of residual biliary stone, which were refered to radiology department of yonsel University during last 2 years, from June 1982 to June 1984. The results as follows: 1. The location of residual stones are extrahepatic in 14 cases (51.9%) intrahepatic in 5 cases (18.5%) and both intra and extrahepatic duct in 8 cases (29.6%) 2. In 13 of 27 cases (48.1%) were required multiple sessions. 3. Fragmentation of stone was done in 16 (59.3%) in 27 cases. 4. Success rate in extrahepatic duct is 13 in 14 cases (92.6%), intrahepatic duct 3 cases in 5 (6-%) and both intra and extrahepatic duct 7 in 8 cases (87.5%) Overall success rate in 27 cases is 85.2%