Aiming at current difficulty of the real-time and dynamic reconstruction of digital holograms with large viewing angle,a novel method was proposed according to the principle of time-sharing reconstruction based on the Liquid Crystal Spatial Light Modulator.The computing principle of large-viewing-angle holograms and technologic principle of time-sharing reconstruction utilizing spatial light modulator were analyzed,and a method of multi-screen jointing in space was proposed.Furthermore,we developed the experimental system by reshaping the optic engine of rear-projector.The computed holograms were processed to be with RGB format so as to accord with the transmission of RGB signals in the driving circuit.The processed holograms were output to the optic engine sequentially with a frequency of 60Hz.The dynamicly reconstructed image with large viewing angle could be obtained.