A medical information processing apparatus according to an embodiment causes a display to display a three-dimensional medical image, receives an operation of rotating direction of the three-dimensional medical image on the display, creates a figure indicating, in a case the three-dimensional medical image is rotated through the rotating operation, whether a movable member of an X-ray diagnostic apparatus can reach a position corresponding to the direction of the three-dimensional medical image after the rotation, based on the direction of the three-dimensional medical image on the display before the rotation, and causes the display to further display the figure.