The invention discloses a method for analyzing the low voltage loss of a distribution network area, which comprises the steps of S1, calculating the copper loss and the iron loss of a transformer; S2, calculating the low voltage line loss in the distribution network area; S3, calculating the total low voltage loss in the area, wherein the total low voltage loss is the sum of the iron loss, the copper loss and the low voltage line loss; and S4, calculating the total low voltage loss and the loss rate corresponding to different load rates outputted by the transformer, and calculating a relation curve of the loss rate and the load rate. The advantages of the invention lie in that detailed analysis and calculation can be performed on the low voltage loss of the distribution network area, thus the low voltage loss can be controlled at a low level when the method is used for guiding transformation of the distribution network area in the future, the energy is solved, and the low voltage loss is reduced.