Effective knowledge assets' sharing becomes one of the crucial factors of increasing core competence of the enterprise. As an important knowledge management tool, knowledge map provides the knowledge sharing platform of tacit and explicit knowledge assets. This paper presents the method of knowledge map building and analyzes the hierarchy of knowledge map. The relationship of knowledge node granularity and knowledge map hierarchy and the related knowledge management tools are discussed. Multi-dimension structure of knowledge utilization is expounded in the framework of knowledge map interactive platform. Human knowledge and machine knowledge of transmission case design are shared by the appropriate person through knowledge map of the enterprise which integrates the intelligence asset, dispels the bottleneck of knowledge transferring and speedups the knowledge reusing.