The invention relates to cleaning equipment, in particular to special equipment for rapidly cleaning an insulator of an electrified railway. The equipment comprises a brush head part and a drive part, wherein the drive part can drive the brush head part to rotate along the axis of the insulator; and the brush head part is provided with a plurality of cylindrical brushes which can be inserted in the clearance of every two adjacent umbrella leaves of the insulator, can rotate around the axes per se, and can wipe the surfaces of the umbrella leaves. According to the invention, the drive part can drive the brush head part to rotate along the insulator, the brushes arranged on the brush head part can be inserted between different umbrella leaves to wipe all the umbrella leaves, and as long as the brush head part rotates around the axis of the insulator for one circle or even less than one circle, cleaning to the whole insulator can be realized with superhigh cleaning speed and without the need of water source and ascent of maintenance workers. The cleaning equipment is suitable for rapidly cleaning the insulators used in electric transmission lines of the electrified railway.