Abstract:The theory of innovation ecosystem successfully introduces the theory of ecology into innovation theory’s development. It emphasizes the ecological characteristics of linkage, openness, synergy, symbiosis and evolution in innovation and development, and changes the innovation paradigm. With the characteristics of stratified traps, open sharing, multi - symbiosis, coordinated development and so on, Mass-innovation Space has a high degree of fit with the innovativion ecosystem in the aspects of the main structure, the intrinsic attribute, the organization and so on. It is reasonable to use the innovativion ecosystem theory as the theoretical basis of the study. Based on the theory of innovativion ecosystem theory, this paper explores the four mechanisms of action. Firstly, the mechanism of demand for traction that created by Mass-innovation Space: endogenous and competition. Secondly, the mechanism of resource aggregation of Mass-innovation Space: open and coordination. Thirdly, the mechanism of function aggregation of Mass-innovation Space: system and diverse, Lastly, the mechanism of system optimization: dynamic and evolution. The successful analysis of the mechanism that under the innovation ecosystem theory enriches the theoretical category of the Mass-innovation Space, and also has great guiding significance for the development of the realism.