The invention provides a benefit evaluation method for an electric power pipe gallery, belongs to the field of electric power accounting, and comprises the following steps: constructing an electric power pipeline including secondary indexes of economy, technicality and social benefits, and bringing the electric power pipeline into a benefit evaluation index system of an urban underground comprehensive pipe gallery; screening indexes in the benefit evaluation index system based on a KPI index selection method, and standardizing the screened indexes; and evaluating the benefit of bringing the power pipeline into the urban underground comprehensive pipe gallery by using a spider diagram method according to the standardized processing result. A comprehensive and systematic power pipeline corridor-entry benefit evaluation index system is constructed. KPI indexes of the power pipeline corridor entry benefit are extracted and the quantification method is provided, so that the power pipeline corridor entry benefit can be comprehensively evaluated for the power pipeline corridor entry planning scheme in multiple scenes, and the regional adaptability of the power pipeline corridor entry promotion mode can be explored.