【关键词】内镜【Abstract】 Objectivecaused by malignant neoplasm. Methods逆行胆道内引流术胆道梗阻T o explore the palliative effect of endoscopic retrograde biliary drainage( ERBD) on irresectable biliary obstruction41 patients with obstructive jaundice due to 7kinds of advanced carcinoma were successfully embeded withinternal frames of biliary tract through duodenoscopy. ResultsThe levels serumtotal bilirubin were decreased to nomal level in 38patients and decreasedby 50 % in 3 patients. ConclusionAs a microtraumatic technique , ERBD can effectively extinct the jaundice for patients with irresectable biliary ob2struction.【 Key words】 Endoscopic retrograde biliary drainage ( ERBD)Biliary obstruction