Currently ,single point buying is implemented by more and more enterprises ,but the consequence is not satisfied. So the buying model of manufacturing industry and the concept of single point buying are discussed in this paper primarily, at the same time , the key techniques of implementing single point buying in manufacturing industry such as: the standardization of the enterprise information, the integrated evaluate system of the supplier and the standard system based on the supply chain are researched under ERP circumstances. The conclusion are also made as following : for implementing single point buying ,the standardization of the enterprise information is the basis, and the improved suppliers management ,the reduction of the purchase expense, improved purchase quality are the key and target.