Isolated injury to the extrahepatic biliary tract following blunt abdominal trauma is rare, and there is little information especially in children regarding the endoscopic diagnosis and management of occult injury to the biliary tract. We experienced a 5-year-old boy who presented with jaundice 16 days after blunt abdominal trauma and was diagnosed as isolated distal common bile duct stricture by ultrasonography of abdomen. We could get more detailed information about the injury by endoscopic retrograde cholangiopancreatography. We could also manage this isolated common bile duct stricture successfully with endoscopic nasobiliary drainage and plastic stent insertion instead of surgical correction. There appeared to be no recurrence of stricture as evidenced by biochemical test and ultrasonography during 2 years of follow up.