The authors presented use of carbon dioxide laser in treatment of dysplasia of the uterine cervix in women with malreproduction. Between November 1991 and September 1993 in the Department of Reproduction, Institute of Gynecology and Obstetrics, Academy of Medicine, Poznań the CO2-laser vaporisation in 21 women was done. In 19 patients the healing was achieved. In two of 21 women in control examination CIN was diagnosed. They were treated with electroconisation. In control examination no signs of dysplasia in all women were observed. The patients are still under control in our department.