The Retro Placental Hematoma (RPH) or placental abruption untimely normally inserted paroxysmal is an accident that threatens maternal and fetal prognosis. It is a major emergency obstetric pathology and remains the second leading cause of maternal mortality after postpartum haemorrhage. It is actually very difficult to have an accurate evaluation the frequency of the HRP because it requires a complete table including Pathologists; or simple macroscopic or microscopic findings; or purely clinical diagnosis for some. Its occurrence requires appropriate resuscitation and adapted care to improve the prognosis. We report our study of 49 cases the HRP hospitalized in Obstetrics and Gynecology of Instruction Military Hospital Mohamed V in Rabat, diagnosed on a suggestive clinical picture and the presence of hematoma after examining the issue. This is a descriptive and comparative retrospective study over a period of one year. This study compared two groups: with HRP feotale death in utero and HRP without fetal death in utero. This study aims to evaluate neonatal mortality and maternal morbidity related to RPH and therapeutic modalities. This pathology formerly known pathology multiparous tends to reach more and more heifer. The important blood loss and delay the expulsion worse prognosis causing severe maternal morbidity hence the need to expand the indications for cesarean of retro placental hematoma regardless of the fetal state. Our study aims to contribute to reduce mortality and morbidity Fetomaternal by improving our work is stepping up efforts for a rapid decision-making, and we must educate what especially pregnant women of the risk factors to see from the beginning of symptoms. The pregnancy monitoring, early diagnosis of RPH, an obstetrical treatment adequate, and a resuscitation well driving can improve the prognosis of this disease.