Disclosed is an X-ray module assembly of a portable X-ray device, the assembly being capable of: manufacturing, as a carbon nanotube or a filament-type tube, an X-ray tube, which is a core component of a portable X-ray device； aligning and arranging, in a space intensive manner, high-voltage capacitors and high-voltage diodes； and molding, within a case of which the size and weight are reduced, an X-ray module formed in the above manner, by means of a thermosetting resin, preferably, an epoxy-based resin, and more preferably, a soft epoxy-based resin, such that the amount of X-ray emission can be precisely controlled, thereby enabling a user's radiation exposure to be minimized, enabling power consumption to be remarkably reduced, enabling miniaturization and weight reduction, providing an excellent insulation effect, and enabling semi-permanent usage. The X-ray module of a portable X-ray device comprises an X-ray tube, a high-voltage trans structure, a plurality of high-voltage capacitors, and a plurality of high-voltage diodes, and is fixedly supported by a tube guide, wherein the plurality of high-voltage capacitors are arranged between an upper substrate and a lower substrate, and the plurality of high-voltage diodes are arranged on the upper surface of the upper substrate and the lower surface of the lower substrate. The X-ray module is embedded in a housing-shaped module case of which the upper part is open, wherein chamfering is applied to bottom edge portions of the module case, such that the insulation distance between a high-voltage side of the X-ray tube and the inner side of the module case is at least 7 mm for weight reduction.L'invention concerne un ensemble module à rayons X d'un dispositif à rayons X portable, l'ensemble pouvant : fabriquer, en tant que nanotube de carbone ou tube de type filament, un tube à rayons X, qui est un élément central d'un dispositif à rayons X portable ； aligner et agencer, d'une manière intensive dans l'espace, des conden
