Today, hysteroscopy is considered the gold standard for evaluating the uterine cavity, and due to improved endoscopic developments, can be performed reliably and safely as an office procedure. Direct view of the uterine cavity offers a significant advantage over other blind or indirect diagnostic methods. 30 years ago when first introduced into wide gynecological practice, diagnostic hysteroscopy was a cumbersome procedure requiring general anesthesia, producing a blurred picture due to primitive optics. Nowadays, however, diagnostic hysteroscopy is well accepted as an accurate, simple and safe office procedure. It can be performed by every gynecologist after a short period of training and does not require a referral to a highly specialized operator. Due to the constant technological improvements the optics are becoming smaller yet produce a precise view. These improvements allow an increasing number of the diagnostic hysteroscopies to be performed in an outpatient setting, with success rates of up to 98.2%. While debating the need for routine diagnostic hysteroscopy in the evaluation of the infertile woman, one must keep in mind that this procedure today is no longer a complicated “in-patient-general-anesthesia one,” but rather a simple, fast, outpatient procedure, requiring short training with high success rates. Diagnostic hysteroscopy allows complete, accurate identification of intrauterine abnormalities that might negatively affect endometrial receptivity and implantation. The information derived from hysteroscopy helps the physician to institute appropriate therapy, and by doing so improve conception rates over shorter intervals. Laparoscopy and hysteroscopy play a very important role as diagnostic tools in infertility. Combined diagnostic simultaneous laparoscopy and hysteroscopy should be performed when indicated in selected infertile patients before their treatment.