The utility model discloses a high voltage switch cabinet handcart rotary device, its characterized in that is equipped with platform form base, the peripheral three connection lug of equipartition at least of base, be equipped with the connecting hole on the connection lug, the revolving stage is connected with the base through the turntable bearing, be equipped with to the interval screw hole on the base platform face, the marginal facies hinge of revolving stage locating lever one end and revolving stage, the revolving stage locating lever other end is equipped with the connecting hole and is connected with the screw hole through fixing bolt, fix the revolving stage on platform form base, in using, at first fix the base on high voltage switch cabinet handcart through bolt and connection lug, equipment fixing will supply power again on the revolving stage and be connected the revolving stage fixed with the base through the revolving stage locating lever, the angle of placing with the adjuster, through narrow passageway and adjustable power supply unit angle, realize the interior free rotation of equipment on the handcart of high tension switchgear, with position adjustment and angle of rotation, the present invention has the advantages of easy use, the efficiency of work is improved when the advantage.