For traditional distribution network planning comprehensive evaluation lacks consideration of characteristics of different distribution network areas, this paper establishes a comprehensive evaluation index system based on the power supply division and the characteristics of the medium and high voltage distribution network planning. In the aspect of index optimization, based on the traditional grey correlation method, core indices are proposed to simplify the calculation procedure of grey correlation degree. Analytic Hierarchy Process (AHP) and grey correlation analysis method are applied to screen indices and eliminate redundant indices, because only using grey correlation theory is not conducive to the independence of indices. The weight calculation method of entropy weight is modified by AHP to make the weight more reasonable. In addition, the objective function is designed by the minimum distance and the Lagrange function is used to get the optimal weight from the weight calculated by methods. A comprehensive evaluation is made by the historical data of distribution network planning in 2015 and 2016 in a city of Henan Province, illustrating that the evaluation system and method can evaluate the whole development level of the distribution network reasonably and find out the short slabs, which provides references for distribution network planning and construction. This work is supported by National Natural Science Foundation of China (No. 51567018).