Background: Given the emphasis on evidence -based management in recent years and one of the new management methods is performance -based management, the purpose of this study was to establish an initial performance -based management system in the emergency department of Nikan Hospital in Tehran. Methods: Establishment of a science -based management system in the Nikan Hospital Emergency System includes six steps: 1) Determining the mission and goals of the organization, 2) Integrated Performance Assessment System 3) Response to Function, 4) Collection of Performance Data, 5) Data analysis, analysis, and performance data, 6) use of performance information to improve the organization. Results: Delays in the provision of bars, photography, experiments and specialized consultations in the crowded hours of emergency (20 to 24). The satisfaction of the patients was less than the service during emergency background (14 to 20). 70% of the patients declared recovery and about 70% announced that they would go to the hospital next time. Conclusion: Implementation of performance -based management system in the country's hospitals that lack the necessary infrastructure should pay many attentions and time and energy in this regard.