This paper innovatively divides supply chain integration into supplier integration,internal integration and customer’s integration and divides the performance of enterprises into suppliers’ operation performance,customers’ performance and operation performance and extends the study on supply chain management from the traditional dualistic relationship of two-level supply chain to triatomic relationship of three-level supply chain and builds a complete and detailed theoretical framework by integrating supply chain and raising enterprises’ performance based on it.The result for the positive analysis of the research data of 150 manufacturing enterprises shows that the improvement of suppliers’ operation performance is favorably promoted by integrating manufacturers and suppliers.Customers’ integration plays an outstanding role in raising the customers’ operation performance.External integration plays a coordinating role in suppliers’ operation performance.