The invention relates to a post evaluation method of a power distribution network energy-saving reconstruction project. The objective of the invention is to eliminate defects in the prior art. The method includes the following steps that: S1, a power distribution network energy-saving project post evaluation system is built; S2, a hierarchical evaluation analysis model is built; S3, the weights of indexes in various evaluation systems are acquired; and S4, an evaluation result can be obtained through model analysis. According to the post evaluation method of the invention adopted, in the post evaluation process of the power distribution network energy-saving reconstruction project, the content options of bottom-layer indexes are subdivided, so that index data can be standardized, and therefore, the accuracy of the evaluation results can be ensured; the characteristics of power distribution network energy-saving reconstruction, such as adaptability and coordination, are highlighted; and the power distribution network energy-saving project post evaluation system, the evaluation model, evaluation criteria, and the weights of the evaluation indexes are built and analyzed, and the current energy-saving reconstruction level of a power distribution network can be reflected quantitatively from a plurality of angles.