One of the intensively discussed topics recently is investigation of infertile patients. A subject of particular interest is a new technique -transvaginal hydrolaparoscopy (TVHL), which has already found its place amongst other methods of infertility exploration. Transvaginal hydrolaparoscopy allows atraumatic investigation of reproductive organs in physiologic conditions, in ambulatory settings. Significant, for clinical practice, is the possibility of a combination of transvaginal hydrolaparoscopy with other methods of investigation -sonohysterosalpinogography, hysteroscopy and salpingoscopy, which make possible integrated exploration of the reproductive system. Instillation of saline into the pelvic cavity through uterine tubes (or through puncture needle if needed) under ultrasonographic control and exposition of posterior fornix, allows better orientation in the pouch of Douglas, complex assessment of reproductive organs and determination of advisability of pelvioscopy -the relatively invasive technique as well as thorough control of the safe access to the pouch of Douglas.