Power cable on-pole protection device

The invention relates to the technical field of power cable protection, in particular to a protection device for a power cable on a pole. Comprising a fixing mechanism which comprises a cable, a pipeline sleeving the outer wall of the cable and a hoop movably arranged on the outer wall of the pipeline; the coating mechanism comprises a guide cylinder arranged on the end face of the hoop, a support arranged on the end face of the hoop and a positioning wheel rotationally arranged in the support. The sealing mechanism comprises a swing arm arranged on the outer wall of the positioning wheel and a rubber sleeve arranged in the pipeline; while a pipeline outside a cable is fixed through the hoop, impurities in an opening of the pipeline are cleaned through the positioning wheel, adhesion of sealant is facilitated, water is prevented from entering the pipeline in the follow-up using process, meanwhile, the sliding hoop slides from top to bottom, so that smoothening is conducted, bumps and wrinkles are eliminated,