Introduction: FMEA is a systemic and preventive tool, completely conceptual, based on a team work. It is included identification, assessment, prevention, controlling or removing main factors and potentially effects relating to a plan or a service. It is necessarily risk preventor done by experts who are familiar to use the method so, selecting the team and planning the plan is an important factor to run the program taking defined steps and paying attention to some rules is necessary for doing the method this study is going to introduce FMEA as a suitable tool and applying it to analyze some probable systemic risks by health personnel.Materials and methods: this study is a descriptive one using a cross – sectional method on a field emergency center in sepah. First, the emergency center was visited once it was defined. During this visit, current situation, weakness and strengths of the center were recorded. Second, in team work meetings the most important duties of the center, based on its mission, including helpings, triage, transportation, treatment, medication health and support, were determined. In next step, each phase and its probable risks or mistakes have been analyzed. Then, in another step, factors producing risks, and their effects on consumers, scorings the severity of mistake, scoring mistake accordance determining current controls for identification or removing mistake were followed. Then, according to collected information and given scores, RPN (Risk probable score) for any risk, has been assessed. These scores were sorted and analyzed to introduce the priorities. Delivering suggested programs to prevent those risks or hazards was the next important activity.Results: the most important problems in helping and transportation phase (with RPN score of 192-567), was skill related ones. In treatment and medication phase, (with RPN score of 192-576), skilled factors and man-mistaks, were reported weaknesses in monitoring and following activities. Were move in important in health sector (with RPN 175-630). Finally, in providation area with RPN192-567, lack and improper man-power, space, and facilities were introduced as more important problems. Inspite of being high RPN for some risks, their priorities in accurance severity curve, were low, in contrast, some risks with low RPN have a higher priority in the curve. Practical solutions were suggested for these problems.Conclusion: In helping transportation phase, skill promotion in man-power got spcial attention along with providing related needs. Reducing man-power mistakes and promoting skills was more important to attention in the treatment medication area. In health domain, attention paid more to monitoring, following activities and solving the problems of the man-power. Finally, in provocation phase, along with solving man-power problems (providing practical scientific, education, motivation) promoting working-space, safety and facilities, received special attention.