The invention discloses a novel power supply plug device. The novel power supply plug device comprises a power supply seat and a plug and is characterized in that the power supply seat is fixedly arranged in a wall, the plug is connected with a household electrical appliance, jacks are vertically and symmetrically arranged in the power supply seat and are provided with rightward openings, swinginggrooves are vertically and symmetrically arranged in positions, at outer sides of the jacks, in the power supply seat, first sliding grooves are arranged in positions, at left sides of the jacks, inthe power supply seat and communicate with the swinging grooves, second sliding grooves are arranged between the two jacks in the power supply seat and are provided with openings facing the jacks, toppress rods are rotatably arranged in the swinging grooves by hinge shafts, sliding rods are arranged in the first sliding grooves and prop against the top press rods in a matching way, a power supplyson block is fixed at the bottom of the sliding rod at an upper side, and a power supply mother block is fixed at the top of the sliding rod at a lower side.