Through analyzing run status of the workstations before bottleneck and assembly resources, a mathematic model is bulit based on reliability of production system; Based on minimizing the system gross cost, optimum task lot and transfer lot sizes of bottleneck and non-bottleneck resources are determined.

The "resource bottleneck" restraining,dependence on the way of industrial development,the channel of investing to be impeded,and the lower government service efficiency etc.

Because China faces resource bottleneck for a lone time,the dependent degree on the import of China\'s large amount commodities is steadily on the increase.