A case of taenia saginata infestation in the small bowel of a 52-year-old woman is reported. A clinical sign and laboratory examination showed no abnormality. Immunoelectrophoresis was positive. Radiologic and endoscopic examinations confirmed the presence of a worm in the distal jejunum to the ileum. By treatment with 30 mg/kg body weight of bithionol, the patient passed a taenia saginata 4 hours later. Follow-up examination for 3 months after the treatment showed no residual evidence of infection.