从弱关系、结构洞、社会资源和结构角色等几个方面阐述了社会网络理论的基本内容,并分析了它们与机构知识库的关系。其中弱关系理论有助于集聚个体能量为群体智慧;结构洞理论有助于发挥信息优势和控制优势;社会资源理论有助于个体积聚源动力创新;结构角色理论有助于预测和引导个体行为。 From the aspects of weak relations, structural holes, social resources and structural roles, this paper expounds the basic content of social network theory and analyzes their relationship with institutional knowledge base. The theory of weak relations helps to gather individual energies as group wisdom. Structural hole theory helps to exert information superiority and control superiority. The theory of social resources contributes to the innovation of individual source of agglomeration. Structural role theory helps predict and guide individual behavior .