Abstract: In order to realize diagnosis of inertial confinement fusion (ICF), high temperature plasma X-ray energy spectrum information and two-dimensional spatial resolution information of detonation target are obtained. Spherical crystal analyzer is fabricated by using Bragg diffraction property of crystal, with bent radius 125 mm. In order to verify spatial resolution of spherical crystal, a backlight imaging platform is designed for backlight imaging experiment. Quartz spherical crystal is diffractive core element, and IP plate of receiving device gets two-dimensional spatial resolution information of Cu target. Experimental results show that spatial resolution of imaging system based on spherically bent Quartz crystal is about 100 μm.