The invention discloses a high-voltage cabinet convenience to transport and having an automatic power-on and power-off function. Left ends of chains are fixedly connected with an upper end and a lowerend of a right side of a high-voltage cabinet body, right ends of the chains are fixedly connected with a high-voltage cabinet door, a handle is fixedly connected to a middle part of the high-voltagecabinet door, a right end of a connection rod is rotatably connected with an inner side of the high-voltage cabinet door, a conduction plate is rotatably connected with a left end of the connection rod, a sleeve ring sleeves the conduction plate and is fixedly connected to the high-voltage cabinet body, an upper surface of the conduction plate is flush with a lower part of an AC mutual inductor,and a lower surface of the conduction plate is flush with an upper end of a high-voltage cable. In the high-voltage cabinet, the conduction plate is driven to move leftwards and rightwards when the high-voltage cabinet door is rotated and closed, the upper end of the high-voltage cable is controlled to be closed with the AC mutual inductor, power failure is achieved when the high-voltage cabinet door is opened and energization is achieved when the high-voltage cabinet is closed, a worker is prevented from getting an electric shock to cause injury, a piston rod is driven to shrink and extend byoil level pressure of a hydraulic cylinder, a roller is driven to ascend and descend to support, the high-voltage cabinet body is convenient to move, and the problems of a live-line misoperation riskand transportation and moving difficulty of a traditional high-voltage cabinet are solved.