To provide a high-voltage pulse transformer which surely realizes improvement of miniaturization and the pulse voltage generation efficiency as well as productivity.

The high-voltage pulse transformer comprises a core 1, such as ferrite core, iron core, etc., a bobbin 2 covering the core 1 and a primary and a secondary windings 3, 4 wound along the side of the bobbin 2 or the core 1. The primary winding 3 is made of a conductive resin and embedded into the side of the bobbin 2 or the core 1 (here, grooves 5 formed into the outer side of a primary bobbin 2a).