The present disclosure provides an X-ray imaging apparatus and control method thereof, by which the users hand is photographed and information about a thickness of a subject, information about a photographed spot or information about a photographing angle may be easily obtained from the photographed image. According to an aspect of an example embodiment, there is an X-ray imaging apparatus comprising an X-ray source configured to generate and irradiate an X-ray a photographing device equipped in the X-ray source for capturing a camera image and a controller configured to detect a plurality of indicators from the camera image, calculate a thickness of an X-raying portion of a subject based on a distance between the plurality of indicators, and controlling an X-ray irradiation condition based on the thickness of the X-raying portion.
