Abstract: The long implementation period of power grid engineering projects not only brings safety hazards to the operation of power grid,but also greatly increases the redundancy and waste of people,finances and materials. The implementation of lean management for engineering projects as the main means of power grid enterprise management improvement is imminent. Based on lean management method with DMAIC,the research of production project management optimization is organized and carried out,and the production project management optimization scheme and promotion method are put forward,which makes the investment benefits be brought into play and ensure the safety production of power grid.