Background: Post-partum hemorrhage is defined as excessive bleeding following a vaginal delivery or cesarean section of more than 500ml and 1000ml respectively. Post-partum hemorrhage is a potentially life-threatening complication of vaginal and cesarean delivery. The aim of the study was to identify the causes of PPH cases and find out modalities and maternal outcomes of PPH cases and different presentations of PPH patients, to identify the causes of primary & secondary PPH. Methods: This cross-sectional study was conducted at Dhaka Medical College & Hospital, Dhaka, Bangladesh during the period from July 2011 to December 2011. The total number of patients in the present study was 200. Patients were selected from those who developed PPH after vaginal delivery or LSCS or instrumental delivery. Patients who were admitted as cases of PPH after home or other institutional delivery. The data were entered into a computer and statistical analysis of the results was obtained by using windows-based computer software devised with Statistical Packages for Social Sciences version 24. Results: During the study period, 407 PPH cases were admitted and the incidence of PPH was 5.72% of the total obstetric cases. Out of 407 cases, 317 (77.89%) were primary PPH cases and 90 (22.11%) were secondary PPH. Among the study people, 89% of patients developed primary PPH, and only 11% developed secondary PPH, 77% of the patients developed no complications other than PPH. 0.5% of patients expired remaining 23% of the patients developed some kind of complication following PPH. Conclusion: Maternal mortality has been used traditionally as a measure of the quality of health care. Recently maternal mortality is being taken into account to assess the burden of the disease. Safe motherhood policies, systematic evaluation, aggressive and appropriate treatment, prompt resuscitation, and volume replacement minimize the potentially serious outcomes associated with PPH. Most of the patients can be managed at the upazilla level by properly trained personnel. Only one-tenth of the patients require surgical management with active management of third-stage labor. So detecting the complications as early as possible and early referred to the tertiary level hospital would be able to reduce the complications and will improve the maternal outcome.