The multi-channel wide-swath synthetic aperture imaging ladar (SAIL) transceiver system is researched. A method to realize the far-field instantaneous wide-swath imaging is presented. The structure of multi-channel wide-swath SAIL transceiver system is analyzed. In particular, the transmitter device is studied and the characteristics of the layout of fibers in the fiber array device are analyzed. The tilt layout of the fibers is given. After that, we further optimize the fiber layout in the fiber array device. The layout model of the fibers for the multi-channel wide-swath SAIL launcher is established, the best layout of the fibers is given. Finally, the structure of the array detectors in the multi-channel wide-swath SAIL receiver is given. This will be of vital significance for the long-distance high-resolution wide-swath airborne SAIL.