Approximately 80% of PROM at term begins labour within 24 hrs and 95% within 72 hours. PROM is often associated with significant maternal and perinatal infections. As the exact aetiology of PROM is not known, it cannot be predicted or prevented. The present study was conducted to assess effectiveness of oral misoprostol in active management of term prelabour rupture of membrane. The present prospective randomized study was carried out in the department of obstetrics & gynaecology at Sri Krishna Medical College and Hospital, Muzaffarpur from May 2016 to April 2017. The study was carried out on 100 patients at term with prelabour rupture of membrane at or more than 36 weeks of gestation and who have no other contraindication for induction of labour and vaginal delivery. Labour induction with oral Misoprostol is effective and has resulted in significant reduction in PROM – delivery interval, Induction Delivery interval and reduction in duration first stage of labour. Oral Misoprostol has not resulted in increased rate of cesarean delivery and the rate of maternal side effects.