An autostereoscopic display apparatus includes multiple micro-display devices for exporting an 3-dimensional image. Each of the micro-display devices produces a portion image of the image. The portion image has multiple viewing-zone portion images with respect to multiple viewing zones. An image guiding unit has multiple micro-image output terminals, which are arranged according to an array sequence being set, so as to guide the output images from the micro-display devices. A stereo-image discrete screen is coupled with the image guiding unit, so that the image can transit the stereo-image discrete screen through multiple column transparent regions for producing multiple viewing-zone images of the image with respect to the different viewing zones. The image guiding unit can be, for example, an optical fiber array unit or an array-type light guiding unit.