An X-ray photographing device is provided with an X-ray irradiation member (10) which irradiates a subject (5) with a slit-shaped X-ray flux (6) from an X-ray source (11a), an X-ray photographing member (7) in which a receiving surface (7a) for receiving the X-ray flux (6) transmitted through the subject (5) is provided, a turning drive unit which causes the X-ray irradiation member (10) and the X-ray photographing member (7) to perform a turning motion around the subject (5) with a turning center line (La) as the center, and an auxiliary drive unit (30) which causes the X-ray photographing member (7) to perform a local motion, which is different from the turning motion, within a movement width (Mw) in a circumferential direction. The width (W2) of the receiving surface (7a) in the circumferential direction is smaller than the movement width (Mw), and the local motion is a local rotational motion with the rotation center line (Lc) as the center. This configuration enables the cost reduction of the X-ray photographing device and also enables the reduction of vibration of the X-ray photographing member (7) caused by the local motion and the improvement of X-ray photographing work efficiency.La présente invention concerne un dispositif de photographie radiographique qui comprend un composant dirradiation de rayons X (10) qui irradie un sujet (5) avec un flux de rayons X en forme de fente (6) provenant dune source de rayons X (11a), un composant de photographie radiographique (7) dans lequel une surface réceptrice (7a) pour recevoir le flux de rayons X (6) transmis à travers le sujet (5) est disposée, une unité dentraînement de rotation qui amène le composant dirradiation de rayons X (10) et le composant de photographie radiographique (7) à effectuer un mouvement de rotation autour du sujet (5) avec une ligne centrale rotative (La) en tant que centre, et une unité dentraînement auxiliaire (30) qui amène le composant de photographie radiographique (7) à effectuer un mouv
