The invention provides a combined type multifunctional electric power overhaul device. The combined type multifunctional electric power overhaul device comprises a lengthened climbing ladder, a climbing ladder body, pedal bodies, a reinforcing supporting device, bottom wheels, a hoop, a mussy wire cleaning device, an electric power detection device, a climbing ladder height adjusting device, a protection hanging rope structure and a fixed hanging frame structure. The lengthened climbing ladder is arranged above the front portion of the climbing ladder body. Adjusting plate bolts are fixed to the left side and the right side of the upper portion of the lengthened climbing ladder, the two fixing modes of hooks and fixed suction discs can be conveniently adjusted advantageously, and accordingly the using function is increased. Through arrangement of a supporting sleeve pipe, a fixing plate and a limiting rope, the inclining angle between the supporting sleeve pipe and the fixing plate canbe conveniently adjusted advantageously, and accordingly the fixing effect to the bottom of the climbing ladder body can be improved when the device is used. Through matched arrangement of an egg-shaped spring and a protection hanging rope body, working personnel can be advantageously prevented from falling down from the climbing ladder body when missing steps on the pedal bodies, and the protection effect is further improved.