PROBLEM TO BE SOLVED: To provide an X-ray diagnostic apparatus capable of reducing work.SOLUTION: An X-ray diagnostic apparatus includes: an X-ray tube 21 generating X-ray to be irradiated to a subject P into which a device is inserted an X-ray diaphragm 22 whose irradiation port 22a through which the X-ray to be irradiated to the subject P and from the X-ray tube 21 is passed can be changed an X-ray diaphragm control part 23 controlling the X-ray diaphragm 22 an X-ray detector 26 irradiated with the X-ray passing through the irradiation port 22a and detecting the X-ray transmitted through the subject P an image data generation part 61 generating image data on the basis of detection signals detected by the X-ray detector and a spot region setting part 62 extracting a tip region corresponding the tip part of the device from the image data generated by the image data generation part 61 and setting a spot region on the basis of the extracted tip region. The X-ray diaphragm control part 23 controls the X-ray diaphragm 22 so as to enable irradiation of the X-ray to a detected region corresponding to the spot region of the X-ray detector 26.
