Recently, it seemed real to us, there was rapid increase in the ratio of the older pregnant woman in our genetic counselling clinic. The number of individuals visiting our genetic counselling clinic at the Gynecologic Outpatient Service of the Niigata University Hospital was 1502 at the end of April in 1990, of which 53 (3.5%) were the cases for consulting about the elderly pregnancy. Of these 53 cases, 29(8.4%) visited during these 3+1/3 years, and 24(2.1%) before. Thus the number of patients visiting our clinic per one year during these 3+1/3 years increases 4 times compared with that before this period.