Provided is an X-ray fluorography apparatus and an afterimage correction method for X-ray fluoroscopic image, which can correct the afterimage component with high accuracy even when photographing and perspective are alternately repeated. Each time an X-ray photographic image is obtained, a photographed afterimage image is obtained for each pixel corresponding to the afterimage image obtained after the current image acquisition and the afterimage image obtained after the previous image acquisition. The value of the decay of a pixel value of an image is obtained from a function of time. Then, the pixel value of the perspective image obtained after this photographing is subtracted from the calculated attenuation value, thereby removing the afterimage.
