In the supply chain system, the inventory is the main object of supply chain management, the level of inventory is high or low not only affects the comprehensive cost of a single enterprise, but also restricts the performance of entire supply chain.To realize the difference between inventory management under the supply chain environment and the traditional supply chain management, to establish stock corresponding to uncertain market needs and how to overcome the existing problems is the important issues the enterprise managers must consider when they improve and optimize the supply chain . This article is based on that researching the problem of inventory management under the environment of supply chain,analyzing the challenges it faces, maintaining the good performance of the supply chain under the premise of normal operation of each link. At the sane time,it interprets the connotation of the supply chain and the inventory management under the environment of supply chain, and points out the several kinds of inventory management mode under environment of supply chain enterprises can take.