The present invention relates to a portable carbon nanotube- and filament-type X-ray apparatus and a method for controlling same. The present invention comprises: a control unit for controlling a portable carbon nanotube- and filament-type X-ray apparatus; and a high-pressure apparatus, of an X-ray source, which is connected to the control unit, has carbon nanotubes (CNT) applied to the high-pressure apparatus of the X-ray source, enables a low-dose exposure by means of detailed control, enables significant reduction of power consumption due to omission of filaments, and has a high-pressure capacitor and a high-pressure diode structure disposed in a sandwiched structure such that the size of the high-pressure apparatus is reduced. The present invention, which is characterized as above, provides improved image quality, assurance of long life, low power consumption, battery-less characteristic, rapid charging, a compact and lightweight structure, enhanced operability and stable exposure measures for an X-ray apparatus used mostly for dental purposes. Therefore, the present invention greatly enhances the reliability of the X-ray apparatus, thereby satisfying various user needs and creating a positive image.La présente invention concerne un appareil portable à rayons X de type à nanotubes de carbone et à filaments, et son procédé de commande. La présente invention comprend : une unité de commande pour commander un appareil portable à rayons X de type à nanotubes de carbone et à filaments; et un appareil haute pression, d'une source de rayons X, qui est connecté à l'unité de commande, a des nanotubes de carbone (CNT) appliqués à l'appareil haute pression de la source de rayons X, permet une exposition à faible dose au moyen d'une commande détaillée, permet une réduction significative de la consommation d'énergie due à l'omission de filaments, et comprend un condensateur haute pression et une structure de diode haute pression disposés dans une structure prise en sandwich