The invention relates to a high-voltage pulse generator, and belongs to the technical field of high-voltage pulse generator design. The high-voltage pulse generator comprises a secondary conductor, wherein N disc-shaped bodies are arranged on the secondary conductor in a penetration manner; N is at least 2; transformer primary side conductors are arranged in the disc-shaped bodies; openings are formed in the centers of the disc-shaped bodies; the primary side conductors penetrate through the openings. The high-voltage pulse generator adopts a multi-stage serial-parallel connection mode, parallel connection of primary sides and serial connection of secondary sides of a transformer can be achieved as N disc-shaped bodies with the transformer primary side conductors are arranged on the secondary conductor in the penetration manner, primary side charge low voltage can be achieved, high-voltage pulse can be output from the secondary sides, and the problems that high-voltage insulating hidden danger and high-voltage crosstalking and communication interference can be caused as high voltage needs to be charged into a main loop of a conventional high-voltage pulse generator can be solved.