Abstract: Under the background of the in-depth promotion of the transmission and distribution price reform, it is imperative to promote the high-quality development of power grid enterprises. Reasonable allocation of resources is the necessary way to achieve high-quality development. In this paper, based on the three responsibilities of "economy, society and security" performed by State grid enterprises, the grey linkage model of GM (1,1) and GM (1, N) is established by using least squares estimation to explore the linkage relationship between the capital input, the cost input and the output effect of power grid equipment assets, and to predict the future input-output value. The establishment of grey model can assist equipment managers in the decision-making of resource allocation, lay a foundation for equipment lean management, and promote the development of high-quality power grid.