Authors present the statistics of the diagnosis and treatment of infertile patients who visited the outpatient clinic of the Department of Obstetrics and Gynecology, School of Medicine, University of Occupational and Environmental Health, Japan throughout 1985. The number of primary infertility (78) was greater than that of secondary infertility (63). The average age and the duration of infertility were 30.5 y. old/3.86 y. (primary) and 31.6 y. old/3.59 y. (secondary), respectively. The most frequent cause of infertility was ovarian-endocrine factor both in primary and secondary infertilities. The second cause was the male factor in primary infertility in spite of the idiopathic factor in secondary infertility. Tubal disorder as a cause was relatively few in both infertilities. So-called open laparoscopy was performed on 11 patients, with little hope of cure. In eight of these patients, disorders of tubal patency and endometriosis, which were not found by hysterosalpingography and hydrotubation before laparoscopy, were discovered for the first time. In twenty pregnancies at the day of statistics, the number of secondary infertility (13) was greater than that of primary infertility (7). All pregnant cases were under 35 years of age and under 5-year of infertility duration at the initial visit to our outpatient clinic. The number 1 cause of infertility was ovarian-endocrine factor. In eight pregnant cases, hysterosalpingography was performed in the same or one cycle before the pregnant cycle. According to the summation of the questionnaire of 65 infertile patients, most of infertile patients were affirmative to in-vitro-fertilization and embryo transfer. Depressive and neurotic tendencies were not remarkable at that time by Self-Rating-Depression Scale (SDS) and Cornell Medical Index (CMI) in 42 infertile patients.