According to one embodiment, there is provided an X-ray diagnostic apparatus which comprises an X-ray generation unit configured to irradiate an object with X-rays； an X-ray detection unit configured to detect X-rays applied by the X-ray generation unit and transmitted through the object； an image generation unit configured to generate an X-ray image based on X-rays detected by the X-ray detection unit； a recording unit configured to record pressure data acquired by using a pressure sensor provided on a guide wire； a measurement position setting unit configured to set a measurement position for a pressure by the pressure sensor using the X-ray image； and a display unit configured to display the X-ray image almost in real time and superimpose and display the measurement position set by the measurement position setting unit.
