The invention discloses a quantization representation and calculation analysis method for power-conservation amount of a power distribution network. The quantization representation and calculation analysis method for the power-conservation amount of the power distribution network comprises the following steps of building a power-conservation quantization and analysis technical platform for the power distribution network, classifying power-conservation measures for the power distribution network, calculating specific quantization indexes of each power-conservation measure, converting the quantization indexes of each power-conservation measure into plus and minus quantization indexes, forming comprehensive quantization indexes X sigma of the power distribution network, and analyzing the good or poor effects of different power-conservation schemes according to the quantization indexes. The quantization representation and calculation analysis method for the power-conservation amount of the power distribution network can overcome the defects in the prior art, such as high cost, a small application range and a poor power-conservation effect, and has the advantages of being low in cost, wide in application range and good in power-conservation effect.