FIELD : medicine.SUBSTANCE : invention relates to medicine, specifically to obstetrics. Combination of mifepristone and osmotic dilators is used. At the same time, mifepristone (RU-486) is prescribed in a dosage of 200?mg in tablet form, oral, once, then after 8?hours, osmotic dilators in the amount of 4–7?pieces are installed under sterile conditions.EFFECT : method allows to increase the efficiency of uterine cervix preparation for childbirth, reduce the incidence of complications, reduce the drug load on the pregnant woman, reduce the time of the patient' s stay in the hospital.1 cl, 3 ex