A material-loading control system and method are disclosed for controlling a track conveyor on a production line through a control unit. When materials are to be loaded, production information is first obtained from a production management system, and information of a tray to be loaded, information of a feeder in which the tray is loaded, and information of a corresponding station are identified. The various information are compared with the production information obtained to see whether they are matched or not. If they are not matched, the control unit is instructed to power off the track conveyor to stop the operation of the track conveyor. In addition, during subsequent production process, if a material-tossing action is detected in the production line, then the control unit is instructed to stop the operation of the track conveyor, thereby ensuring the correctness of tray changing and reducing the error rate in material loading.