We have recently experienced a case of Lemmel's syndrome induced by meal rest in the parapapillary diverticulum. The patient was a 81-year-old woman admitted to our hospital with complaints of fever, right hypochondriac pain and jaundice. She had previously undergone the procedure of EST for common bile duct stones. Abdominal ultrasonography revealed the dilatated common bile duct. Endoscopic finding showed obstruction of the orifice of common bile duct by meal rest like plug. After endoscopic removal of meal rest, she was conservatively treated. As a result she was getting better.