The present invention provides an x-ray imaging device comprising: an x-ray emitter and an x-ray detector, which rotate while facing each other with an imaging object interposed therebetween； a device control unit for conducting a control such that first x-ray imaging is performed with a first dose in a partial section of the trajectory of rotation of the x-emitter and the x-detector, and second x-ray imaging is performed with a second dose, which is lower than the first dose, in the remaining section； and an image processing unit for receiving first and second x-ray imaging data, which results from the first and second x-ray imaging, from the x-ray detector and producing an x-ray image.
