The invention discloses a suction-sweeping device for a live power distribution cabinet. The device comprises a rotating brush head, an operating hollow rod and a dirt suction unit; the section size of the rotating brush head is smaller than a preset size, and the rotating brush head comprises a brush head end and a coupling end; the coupling end of the rotating brush head is hollow, and communicates with the lower part of the brush head end; the coupling end of the rotating brush head is connected to the operating hollow rod; the brush head end of the rotating brush head is used for making contact with a to-be-suction-swept surface, and dirt on the surface is swept and sucked into the brush head through rotation of the brush head; the dirt is conveyed into the operating hollow rod throughthe coupling end of the brush head; the other end of the operating hollow rod is connected to the input end of the dirt suction unit; the operating hollow rod is made of insulating materials, and held by an operator; the dirt suction unit is used for providing suction, so that the dirt is sucked into a dirt collecting bag of the dirt suction unit through the rotating brush head and the operatinghollow rod; and the device is high in cleaning efficiency for the live power distribution cabinet, flexible in operation, and safe and convenient.