Abstract:Abstract: According to the characteristics of Virtual Flow Line of Ship Block Building , the volume of process operation was very different, in order to realize the balance of production, the resources must be distributed reasonably and effectively, the number of operation groups and resources were different. The article references the idea of JIT, in order to achieve the balance of production process, ensure the progress of production smoothly, and improve the efficiency of ship production , we can compare the operation volume of the process, choose corresponding operation groups, and use the kanban management . Select an instance of a company , using MATLAB to solve the case .