The utility model relates to the technical field of high-altitude operation, in particular to a high-altitude operation climbing protection device for electric power maintenance, which comprises a left climbing assembly, a right climbing assembly, a front reinforcing rod, a rear reinforcing rod, a suspension device and a safety connection assembly, and the left climbing assembly and the right climbing assembly have the same structure and are distributed in mirror symmetry; the left climbing assembly comprises a left shell, a left gear, a left motor, a left crawler belt, a left sliding rod, a left front telescopic rod and a left rear telescopic rod, the left shell is of a box structure with a rightward opening, and the left shell is provided with a left mounting cavity which is through up and down. The crawler belt laying device is reasonable and compact in structure and ingenious in conception, and laying of the left crawler belt and the right crawler belt is completed through meshingof the left gear and the left crawler belt and meshing of the right gear and the right crawler belt; the reset springs are arranged in the left front telescopic rod, the left rear telescopic rod, theright front telescopic rod and the right rear telescopic rod, so that the left crawler belt, the right crawler belt, the front reinforcing rod and the rear reinforcing rod tightly hold the telegraph pole all the time, and the telegraph pole has the characteristics of reliability, stability, simplicity and convenience.