【Purpose/significance】The social network environment make it easy to access the required knowledge, and organization can identify the main factors that affect knowledge integration. It has the great practical significance to improve theefficiency of organizational knowledge integration.【Method/process】Using the method of social network analysis, this paperstudied the mechanism of organizational knowledge integration from three aspects, namely, the factors, the mode of knowledge integration and the way to realize knowledge integration,【Result/conclusion】The research results showed that in thesocial network environment, all of the network relationship, the network density and the network capital will have an influence on the knowledge integration of the organization. To realize the knowledge integration effectively, we should set up theknowledge integration platform, innovate the organization culture, cultivate the cooperation spirit of the organization and theorganization members, promote the knowledge integration capabilities, and establish a perfect trade-off mechanism.