Recently, we have been performing salpingoscopy concomitant to the performance of laparoscopy, and we have been constructing an evaluation scoring system using the results of salpingoscopy. From April 2008 through October 2010, 227 women who had been diagnosed with unexplained infertility underwent salpingoscopy at our clinic. With the salpingoscope, both the right and left tubal lumen were observed paying attention to following six findings: i) adhesions, ii) loss of mucosal folds, iii) rounded edges of mucosal folds, iv) debris, v) foreign bodies, and vi) abnormal vessels. One abnormal finding was given a 1-point F Score with a maximum of 12 points. We analyzed the relationship between the F scores and various clinical findings and pregnancy rates. About 51% of the patients showed an F score of 0, and the percentages of patients who showed 1, 2, 3 and 4 or more, points were 17.2, 13.2, 5.3 and 12.8%, respectively. The pregnancy rate (34.9%) of patients with a low F score (F score≤2) was significantly higher than that (14.6%) of patients with a high F score (F score ≥3, P<0.05). The patients showing a lower F score showed higher fecundity than those showing an F score of 3 or more without ART treatment.