Direct-current high-voltage generator

The utility model discloses a direct-current high-voltage generator, relates to the technical field of electrical equipment, and aims to provide a direct-current high-voltage generator which is provided with a detachable mounting rack, can quickly dissipate heat around a machine body, and is convenient for cleaning dust. The mounting rack is arranged on the bottom of the protection box, a placing area and a mounting area are formed between frames of the mounting rack, the high-voltage voltage-multiplying cylinder is placed in an inner cavity of the placing area, and the test host is fixedly connected with the bottom of the protection box in an inner cavity of the mounting area. The high-voltage voltage-multiplying cylinder and the test host are fixed in the placing area and the mounting area, meanwhile, the mounting frame is detachably connected with the protection box, and during use, the mounting frame can be detached, so that an air flowing area exists around the test host, heat in the test host is dissipa