An X-ray imaging system 1A is constituted of: an X-ray imaging device 10 that includes a scintillator, which converts an X-ray image to an optical image, and an imaging element, which acquires an X-ray observed image by detecting the optical image generated by the scintillator a first subtracter 25 that performs a subtraction process between a first X-ray observed image, which contains a first noise image component, and a second X-ray observed image, which contains a second noise image component, to generate a noise image a threshold value processing circuit 26 that performs a threshold value process on the noise image to extract the first noise image component and a second subtracter 27 that subtracts the extracted first noise image component, from the first X-ray observed image to generate a noise-removed image. An X-ray imaging method and an X-ray imaging system that enable an X-ray observed image to be acquired favorably in a state in which the effects of the noise image components are reduced are thus realized.
