In order to study and diagnose the distribution,movement process and shape of the high-temperature plasma of pellet implosion,evaluate the driven symmetry and uniformity of laser radiation,analy ze the promote layer motor process of target implosion of ICF radiation driven in the laser-driven inertial confinement fusi on and the pinch implosion,a novel spherically bent crystal imaging system is developed based on the Bragg diffraction theor y. The imaging system can obtain X-ray spectral information of high-temperature plasma and monochrome X-ray spatial informatio n of ICF target implosion.The information can provide the theory basis for the optimum coupling design of the drive and target .The spherically bent Mica crystal analyzer is the most important component in image system,where the bent crystal radius is 143.3mm.The monochrome X-ray backlight imaging experiment using spherically bent Mica crystal has been carried out at the Chine se Academy of Engineering Physics.The detector (imaging plate) obtains two-dimensional,spatially-resolved,monochromatic ba cklight mesh imaging.By analyzing the backlight mesh imaging information of the experiment,the spatial resolution of the imaging sys tem based on spherically bent Mica crystal is 68μm. The experimental results show that the spherically bent Mica crystal is adequate for monochrom atic X-ray backlighting imaging diagnosis.