This study was undertaken to demonstrate the relationship between oligomenorrhea/amenorrhea and minor mullerian anomalies. Hysterosalpingograms were taken in total 139 patients including 62 infertile patients with normal menstrual intrerval, 47 infertile patients with oligomenorrhea or amenorrhea and 30 tubal reanastomosis candidates with normal menstrual interval. The results were summarized as follows: 1. In unselected infertile patients, the occurrence rate of minor mullerian anomalies was 38%. 2. The occurrence rate of oligomenorrhea/amenorrhea in infertile patients with minor mullerian anomaly was significantly higher than that of infertile patients with normal uterus and the reverse was the ( ) result. 3. There was no significant difference in the occurrence rate of minor mullerian anomalies between infertile patients and tubal reanastomosis candidates with normal menstrual interval. 4. There was no immediate relationship between the degree of fundal anomaly and the duration of the menstrual intervals and/or the duration of the oligomenorrhea or amenorrhea.