Abstract: Under the tide of global technological revolution and industrial revolution, speeding up the integration of industrial chain, innovation chain, capital chain and service chain has become an important measure to promote industry innovation around the world. In China, how to effectively improve the level of innovation ecosystem through the "four chains" integration has become a difficult problem to be solved. Based on the industry competitive advantage theory, regional innovation theory, industrial chain, industrial clusters and other disciplines theory, This paper expounds the connotation and essence of the “four chain” from the perspective of technological innovation, interprets the internal relationship between "four chains" and the innovation ecosystem, analyzes the theoretical logic that the "four chains" promotes the improvement of the level of the innovation ecosystem, and constructs a "four chain" framework model. Through the study, we find that the essence of "four chains" integration is the deepening of cooperation among different creative subjects. It is through the development of "four chains" and the interaction of "four chains" that promote the improvement of the level of the innovation ecosystem. Finally, this paper analyzes the six basic laws of integration, and put forward three theoretical paths to promote the level of innovation ecosystem for reference.

Key words:  Four Chains integration, innovation ecosystem, energy level promotion, frame structure model, theoretical path