Recenthy, with the development of smart distribution network and ubiquitous Internet of Things, the distribution network projects have attracted much attention. Post -evaluation for power grid projects can find the problems, put forward suggestions for improvement and guide the future project process management,which plays an important role to realize the closed-loop and lean management. Considering the multi-dimensional characteristics of power grid, a post-evaluation method with its index system for power grid projects based on attribute theory is put foward. Considering implementation process, effect and benefit, environment and social benefit, sustainability, a hierarchical multi-dimensional grid project post-evaluation index system is established. Based on attribute theory, a post-evaluation method is proposed, including single index attribute measure, the index weight calculation and multi-attribute post -evaluation comprehensive evaluation method. Through the evaluation and analysis of practical engineering projects, case studies prove that this evaluation method can find out the problems existing in the project and analyze the causes of the problems, which is beneficial to guide the company’s future investment direction and decision-making, and achieve accurate investment.