The invention relates to a large power enterprise performance distribution monitoring and analysis system which comprises a performance monitoring module, a performance data analysis module, a decision support module, a service processing module and a self service module. The value of human resource management performance data is deeply dug through multi-dimensional, multi-index and real-time intelligent analysis, thereby improving the quality of performance assessment management work, providing a support for decision-making of leader, providing complete and accurate performance assessment management data for line managers at all levels, integrating performance assessment management into the enterprise center work, giving full play to the enthusiasm and creativity of leaders and workers and promoting dedication of the workers.