High-voltage switch cabinet

A high-voltage switch cabinet disclosed by the present invention comprises a cabinet body, the front side of the cabinet body is provided with a cabinet door, the rear side of the cabinet body is provided with a rear side plate, the rear side plate comprises a first frame and a rear side skin, the cabinet body comprises a second frame, a third frame, a fourth frame and a cabinet body skin, the second frame faces one side of the cabinet door, the third frame faces one side of the rear side plate, and the fourth frame faces one side of the cabinet body skin. The fourth frame is connected with the second frame and the third frame, a positioning shaft is arranged on one side of the bottom of the first frame, a positioning groove is formed in the bottom of the third frame and sinks from top to bottom, the opening size of the positioning groove is larger than the diameter of the positioning shaft, and the positioning shaft extends into the positioning groove. A self-locking mechanism is arranged between the top of