The invention discloses an electrifying insulating 360-degree cleaning brush for a transformer substation disc type suspension insulator string. The electrifying insulating 360-degree cleaning brush comprises an insulating operation rod (1), a cleaning brush bracket (2), an insulating pneumatic motor (3), an active insulating gear (4), a driving insulating gear (5), an insulating cleaning brush gear (6) and an insulating cleaning brush (7), wherein the insulating operation rod (1) is fixedly connected with the cleaning brush bracket (2); a driving device of the insulating pneumatic motor (3) is connected with the active insulating gear (4); a brace of the insulating cleaning brush (7) passes through the cleaning brush bracket and then is fixedly connected with the insulating cleaning brush gear (6). The electrifying insulating 360-degree cleaning brush can be used for cleaning a 360-degree plane of the disc type insulator at one time and solving the problem that an operator can only clean a 90-degree fan-shaped plane of the disc type suspension insulator by using a common cleaning brush and other 270-degree fan-shaped planes cannot be cleaned under the limitation of manual operation.