The invention discloses a cleaning device for electrical equipment, which comprises a box body, wherein a water outlet pipe with a valve is arranged at the bottom of the box body; a cavity is arranged in the box body; a long pipe communicating with the box body is arranged in the cavity; a water pump is arranged on the long pipe; the upper part of the long pipe extends out of the box body and is connected with a first spray nozzle and a second spray nozzle on the left side and the inner side of the box body respectively; suckers and brushes, which are arranged on connecting rods, are arranged on the left side of the box body; wheels are also arranged on the left side of the box body; the wheels are connected with first motors through first central shafts; the first motors are arranged on the box body; two pairs of opposite support rods are hinged to the inner walls of the box body through hinges; the support rods are connected with circular rings; flat plates are arranged at the bottoms of the circular rings; second motors are arranged on the flat plates; and the second motors are connected with rollers through second central shafts. The cleaning device for the electrical equipment has the beneficial effect of being capable of automatically and efficiently clean the surface of the electrical equipment and electrical cables.