Stool and urine examinations revealed eggs of Schistosoma haematobium in a 31-year-old asymptomatic Japanese female returned from Africa. She was treated with praziquantel, and good therapeutic result was obtained. However, as S. haematobium is not indigeneous to Japan, most Japanese doctors and medical technologists are unfamiliar with this parasitic disease, they need to be reminded of its existence when they encounter persons who have visited or resided in endemic areas, and of the necessity of urine and stool examinations of such persons.