Abstract:[Purpose/significance] The purpose of this paper is to clarify the fundamental differences and potential interactions among knowledge maps,mapping knowledge domains and Google knowledge graph[Method/process] The similarities and differences among the three are compared from multidimensional perspectivesThe fundamental differences among the three are teased around the aspects of “knowledge” and “map”,and then the theoretical framework of the interaction is constructed[Result/conclusion] The key point for clarifying the differences among the three is distinguishing “knowledge and its association” and “characteristics of the visualization”The cornerstone of interaction researches among the three is clarifying the interaction context,supporting technology,interaction mechanisms and expected conclusions[Limitations] The research focuses on theory and design without empirical data