Abstract: Electric industry which has great importance to the national economy and the people’s livelihood is the fundamental industry to a nation, and it promotes the social improvement; therefore, the comprehensive post-evaluation of the electric project is crucial. The paper establishes a whole comprehensive post evaluation model based on the previous research that has already built the post evaluation criteria in the light of knowledge management. Making use of the AHP, the paper analyses and calculates the every expert’s weight of each index in the post evaluation criteria; then, according to the index weight result by every expert which can create an region of each index by the minimum and maximum, the paper uses the CCR-AR model in DEA to establish the final post evaluation model for the grid project.