Abstract: The disclosure provides an intelligent horizontal transportation system for a completely automatic side-loading/unloading container terminal. The system includes a horizontal transportation device including an unmanned artificial intelligence robot of transportation (ART) and a horizontal transportation control system that intelligently manages and controls the ART to enable it to complete horizontal transportation. The horizontal transportation control system is in real-time connection and communication with a terminal operation system (TOS), an automatic field crane, an automatic shore crane and the ART to complete information interactive processing to realize information interconnection, so as to guarantee real-time utilization of information and intelligent control of the ART. The horizontal transportation control system realizes intelligent management and control of the horizontal transportation device by executing the following functions.