The present invention relates to an X-ray imaging apparatus, comprising: an X-ray imager including an X-ray beam generator for emitting an X-ray beam, an X-ray beam detector for detecting the X-ray beam to obtain an X-ray image of an object, and a main body unit in which the X-ray beam generator and the X-ray beam detector are installed; and a three-dimensional scanner arranged in the X-ray imager in order to obtain an image of the outer appearance of the object. According to the present invention, an X-ray image and an image of the outer appearance of an object, for example, an image of the skull and an image of the face, can be obtained at the same time, thereby minimizing image correction procedures for matching two images.