1. A 3D display system, comprising: a plurality of multi-viewing zone miniaturized imaging modules, each comprising: a housing; a projection unit disposed on an inner side of the housing; and a viewing zone modulating screen disposed on another inner side of the housing and opposite to the projection unit which projects an image onto the viewing zone modulating screen; wherein, in each multi-viewing zone miniaturized imaging module, the projection unit projects an image onto respective viewing zone modulating screen, and forms a plurality of viewing zones in front of the viewing zone modulating screen, and the image is a segmented image composed of a plurality of images having different view-angles; and an image output module for editing, adjusting and distributing the multi-viewing zone image to the multi-viewing zone miniaturized imaging modules for display.