Simultaneous application of cytology, colposcopy and colposcopically directed punch biopsy is acknowledged diagnostic procedure in squamous intraepithelial lesions (SIL) and cervical cancer, but not in every case it allows for precise estimation and localisation of the lesion. The aim of the study was evaluation of the value of microcolpohysteroscopy (MCH) in diagnostics and therapeutical qualification of SIL. The study group comprised 86 women cytologically suspected for SIL. Sensitivity, specificity, positive and negative predictive values of MCH in detection of SIL were calculated. The estimation of the value of MCH in therapeutical qualification was based on therapy effects of SIL performed according microcolpohysteroscopy evaluation of the cervix. In cases of low-grade SIL the sensitivity of MCH reached 0.73, the specificity 0.5, positive predictive value was 0.85 and negative predictive value was 0.33. For high-grade SIL and cervical cancer the values were 0.98, 0.33, 0.95 and 0.5 respectively. Totally, for all lesions of SIL type and cervical cancer sensitivity of MCH reached 0.94, specificity 0.75, positive predictive value was 0.99, and negative predictive value was 0.38. The high value of microcolpohysteroscopy in evaluation of the cervix made possible to optimize the treatment mode and adequately employ of minimal invasive therapeutic methods.