Subjects and research methods: A prospective study, described in 70 women were diagnosed oligohydramnios, was labour induction by PG E2 (Cerviprime gel injected into the channel cervix, up to 3 doses, 6 hours distance), monitoring indicators and Bishop index of labor for every 2h in the labour, the fetal heart rate monitor continuously on obstetric monitor, assess infant's Apgar 1er minute and 5er minutes.