Background: Risk management is improving quality of health care services and creating a safer system of care. We determined the main maternal and fetal risks in five Hospitals (Tehran-Iran) to offer some practical strategies to decline obstetric adverse events and provide better pregnancy outcome. Methods: A descriptive, cross-sectional study was carried out in 5 Iranian hospitals (2011-2012). Twelve Obstetricians/perinatalogists and midwives from 5 hospitalswho were in charge of Maternity Units, were our assistants in these hospitals. We organized a secretariat including Obstetricians/perinatalogists and midwives. The principles of Obstetrics Risk Management were introduced to them in a 2 days’ workshop. Then the delegates from each hospital were asked to report the most common obstetrical complications of their hospitals. The main results were 24 complications. Then for sorting these risks we asked them to do scoring of the 24 complication with 1 - 10 grading in 4 aspects of probability of occurrence, possibility of prevention, priority of interventions and short term response to interventions. Post partum haemorrhage, labor management problems, and neonatal hypothermia got the highest scores in these regards, and then these 24 items were categorized in 2 groups of risk assessment and hospital management. Finally based on Risk Management Rules in Clinical Governance, the complications analysis was done with use of failure mode, effects analysis and practical strategies to decline obstetrical adverse events were suggested. Results: We understood all reported complications had common infrastructural problems: defects in Risk Assessment and Hospital Management Policies. We focused on basic infrastructural management in these 2 main subjects and in these two: our main problems were related to staff management and hospital management issues. Conclusion: Since managerial and staff dependent problems were our main problems, these two should be considered as our main priorities in risk management program.