PROBLEM TO BE SOLVED: To provide an X-ray imaging device capable of suppressing radiation noises from a cable connecting a starter circuit and an X-ray tube with a simple configuration.SOLUTION: When prescribed operation (release of an electromagnetic lock switch 51) is performed on a support 4 supporting an X-ray tube device 3, an anode is preliminarily rotated at a first rotation speed. Then, when a first photographing switch 11 is operated, the anode is rotated at a second rotation speed. Then, when a second photographing switch 11 is operated, a predetermined high voltage from a high-voltage generating circuit 2 is applied between a cathode and the anode to generate X-rays. Thus, by preliminarily rotating the anode, the rotation speed of the anode can be increased up to the second rotation speed required for photographing with a drive power having a low voltage value.
