In order to solve the problems that extensive, lagging and insufficient management, which in the traditional steel stock yard of shipyard. This paper designs a digital management system of steel stock ,which based on Industrial Cloud. Through some technical means such as Big Data, Internet and Internet of Things, the industrial equipment used for steel plate management in the shipyard is connected in series to achieve reasonable and efficient in steel plate management. The system has stability, universality and continuous expansibility, which provides a new solution for the information construction of shipyard.