The safe and stable operation of the power grid and the high-quality service play a solid role in ensuring the power supply. However, there are many professional management items of power grid equipment, and the quality and efficiency of professional coordination need to be improved. The quantitative production input and output cannot meet the development needs of lean management. It is urgent to establish a set of equipment input-output analysis methods to meet the lean management needs of enterprises. Therefore, this article combines the analysis of equipment management objectives for power grid enterprises, with the goal of achieving the minimum cost input and optimal output effect for power grid enterprises. A corresponding analysis and evaluation model is constructed, and empirical analysis is conducted using actual data from various units in a certain area of Fujian Power Grid Company, providing reference for cost saving and improving investment efficiency for power grid enterprises.