Abstract:Inventory can help the enterprises operate regularly, but it will results more inventory costs and take up a massive influx of funding. So it is necessary to find a balance between inventory holdings and inventory costs. This paper use AnyLogic to build a simulation and optimization of inventory system based on single inventory point. It simulates a process including suppliers, purchasing departments, customers and information flows. At last, we use continuous review model to make simulation and optimization, and obtain optimal strategy which can achieve lowest cost.