A steel plate yard digital management system based on the industrial cloud is designed. The industrial equipments for steel plate management in shipyards are connected in series with cloud computing, big data, Internet, and Internet of Things (IoT) and other technologies to achieve the goal of reasonable and efficient management of shipyard steel plate yard. A steel plate stacking optimization strategy based on the genetic algorithm is designed, and the algorithm program is written with MATLAB. The algorithm results show that the output steel plate stacking scheme can greatly reduce the turnover number of steel plate and improve the turnaround efficiency of steel plate yard. The system is of the stability, universality, and continuous expansibility, which can provide a new solution for the informatization and intelligent construction in shipyards.