The invention relates to a high-temperature and low-voltage aging test device. The test device comprises a tank body, a center electrode and a valve connector. The tank body is divided into three parts which comprise an insulating plate, an outer shell and a bottom cover plate. The insulating plate, the outer shell and the bottom cover plate are sequentially connected. The center electrode is mounted and fixed at the central position of the insulating plate of the tank body, and the center electrode goes deep into the tank body through a through hole in the insulating plate. The valve connector is used for being connected with an external gas valve. According to the high-temperature and low-voltage aging test device, various properties are inspected to meet the test requirement of an electric heating aging test platform, a basin-type insulator in an SF6 gas current transformer can be studied, support is provided for studying the relation between pressurization partial discharge and SF6 decomposed gases, and thus a foundation is laid for better monitoring the operating condition of the current transformer.