Provided are an X-ray source enabling the omission of installation of multi-slits in a highly sensitive X-ray imaging method using an X-ray Talbot-Lau interferometer and an X-ray imaging apparatus using the X-ray source. An X-ray source (10) comprises a substrate (11) and plural stripe portions (12). The plural stripe portions (12) are disposed on the surface of the substrate (11). The plural stripe portions (12) are disposed at intervals. The disposition interval ds between the plural stripe portions is nearly constant. Either the substrate (11) or the stripe portion (12) is made of metal that generates the required amount of X-rays by excitation beam irradiation.
