The invention discloses a telegraph-pole centering device for electric power repairing. The telegraph-pole centering device comprises a transversely-arranged base. A back limiting device and a front limiting device are arranged at the two ends of the base. A swinging barrel capable of swinging back and forth is hinged to the interior of a supporting section of the base. A supporting device is inserted into the swinging barrel and locked to the upper middle section of a telegraph pole through a hinged locking device capable of vertically swinging. The power input end of the supporting device is in transmission connection with a power device through a bendable transmission hose. A handle is further fixedly arranged on a supporting base. An outwards-extending protective cover is fixedly arranged at the inner end of the handle. The telegraph-pole centering device has the advantages that soil and stone on the normal-position side of the telegraph pole can be rapidly excavated, dust disoperation can be prevented, the telegraph pole can be rapidly centered, time and labor are saved, fixing is firm, the size is small, carrying is convenient, one person can independently center the telegraph pole, centering efficiency is high, and the telegraph pole can be prevented from being broken off.