Prelabour Rupture of Membranes (PROM) is one of the most common complications of pregnancy that has major impact on fetal and maternal outcome. It occurs in 1 out of every 10 pregnancies; 80% of women who present with PROM are term. It is also one of the commonest event where a normal pregnancy can turn into a high risk situation for the mother as well as for the fetus. Despite the relative frequency of this event, clinical management is one issue unresolved by the clinical research till date. A prospective study was designed to know the incidence, etiology, risk factors, fetal and maternal outcomes of prelabour rupture of membrane in Government Chengalpattu Medical College Hospital. One hundred mothers with singleton pregnancy in the age group of 19 to 35 years with leaking per vaginum and without maternal complications interfering with active management of PROM like heart disease, Pregnancy Induced Hypertension (PIH) were chosen and assessed with a standardized protocol. The data was collected and analysed statistically.