Beam generation unit and the x-ray small-angle scattering apparatus

Providing simultaneously take micro beam generation unit and the X-ray small-angle scattering apparatus an image of anisotropic with a compact construction and high signal to background ratio. To detect the diffracted X-ray by 1-dimensional detector or a two-dimensional detector, a micro beam generation unit 110 for generating X-rays of small spot size to be irradiated on the sample, provided on the X-ray optical path, X a slit 115 for shaping the wire into a parallel beam, (+, -, -, +) to be arranged, and two channel-cut monochromator crystals 117 and 118 for removing parasitic scattering the shaped collimated beam by a slit, equipped with a. This makes it possible to obtain an image of anisotropic simultaneously with a compact construction and high signal to background ratio.