The utility model discloses electronic cleaning device of portable power transmission line insulator, including driving motor, driving snake, handle and brush head, the handle is hollow structure, be equipped with driving shaft and driven shaft in the handle, be equipped with the driving bevel gear on the driving shaft, be equipped with the driven bevel pinion on the driven shaft, the driven bevel pinion with initiative umbrella gear -type becomes the meshing transmission, an end connection of driving snake is in on driving motor's the output shaft, the other end hookup of driving snake is in on the driving shaft in the handle, the one end of the driven shaft in the handle is stretched out the handle with the hookup of brush head. The utility model discloses a control driving motor and handle and realize cleaning the electronic of insulator, solved the problem that the tradition leaned on the manpower to use the towel to clean to the insulator, not only promoted clearance work efficiency and clearance effect greatly, practice thrift the manpower moreover, facilitate for overhauing, can effectively improve the security and the reliability of overhauing the operation.