Disclosed herein is an X-ray image apparatus having an improved signal transmitting structure connecting an X-ray generating unit or an X-ray detecting unit to a control unit or a power supply unit. It is an aspect of the present invention to provide an X-ray image apparatus including an X-ray generating unit generating X-rays and radiating the X-rays an X-ray detecting unit detecting the X-rays radiated from the X-ray generating unit a moving unit for moving the X-ray generating unit a power supply unit for supplying power to the X-ray generating unit a control unit controlling a movement of at least one of the X-ray generating unit and the X-ray detecting unit and at least one signal transmitting unit transmitting a signal to at least one of the power supply unit and the control unit, and coupled to an inner side of the moving unit. According to one aspect of the present invention, since the signal transmitting unit is not revealed out of the X-ray image apparatus, it is possible to prevent an accident caused by a collision between the X-ray image apparatus and the signal transmitting unit from occurring. In addition, since it is possible to prevent an inspector and a patient from colliding with the signal transmitting unit, a convenience for the inspector and the patient can be increased when an X-ray inspection is performed.