Background: The endometrium plays an important role in implantation of good quality embryos in ART. Many studies have proved the negative impact of intra uterine pathologies on reproductive outcome whether spontaneous pregnancy or ART, because uterine anomalies may be associated with many obstetric complications such as miscarriage, preterm birth, premature rupture of membrane, malpresentation, postpartum bleeding and retained placenta. Aim of the work: This study aims to assess the prevalence of abnormal hysteroscopic findings among infertile women undergoing ART at Ain Shams Maternity University Hospital over the period from January 2007 to January 2017. Patients and Methods: This descriptive retrospective study was carried out on infertile couples planned for ART who were sent to ECDU for hysteroscopy in Early Cancer Detection Unit (ECDU), Ain Shams University Maternity Hospital. Case reports From January 2007 to January 2017 were reviewed. Results: The most prevalent congenital abnormality was endometrial polyp (18.4%) followed by uterine septum (6.9%). Conclusion: This study concluded that the most common uterine abnormality was endometrial polyp (18.4%), followed by uterine septum in 6.9% of patients. Also, thick endometrium was very common with a prevalence of 12.9%. Therefore, based on this high prevalence of abnormalities, this study is in agreement with the opinion that all women should be offered hysteroscopy, even if they have normal vaginal ultrasound and hysterosalpingography, because this is supposed to increase the detection rate of minor abnormalities, which theoretically will improve the reproductive outcome. Still, further interventional randomized controlled trials (RCT) are needed to verify the positive impact of routine use of hysteroscopy prior to ART.