The utility model discloses an electric power facility ascending overhaul auxiliary device. The electric power facility ascending overhaul auxiliary device comprises a supporting platform, the lower portion of the supporting platform is connected with a lifting driving mechanism, a cleaning mechanism is installed on the supporting platform and comprises a recovery box communicated with a material collecting box through a recovery pipe and an air pipe, one end of the air pipe is connected with an air outlet of a draught fan, an air supply header pipe is arranged in an inner cavity of the recovery box, a plurality of air outlet pipes upwards extending out of the recovery box in a penetrating mode are communicated to the air supply header pipe, a plurality of air outlet holes are formed in each air outlet pipe, the portions, between the air outlet pipes, of the upper surface of the recovery box are further provided with a plurality of water collecting holes communicated with the inner cavity of the recovery box, and the other end of the air pipe is inserted into the inner cavity of the recovery box to be communicated with the air supply header pipe. According to the electric power facility ascending overhaul auxiliary device, the cleaning mechanism is installed on the supporting platform and does not need to be carried with a maintainer, so that use is convenient; while the cleaning mechanism is used for cleaning an outer shell of an electric power facility through air blowing, removed impurities are removed through the water collecting holes in the recovery box, the cleaning effect is optimized, the cleaning time is shortened, and the overhaul working efficiency is improved.