Abstract: Key core technologies play an important role in national defense and security and national economic development. Most of the existing studies have paid attention to the interaction between entrepreneurial ecology and innovation activities. However, most of the innovation activities in the field of key core technologies have long periodicity and large investment, which is different from general innovation activities and contrary to the characteristics of entrepreneurial enterprises. It is of great significance to explore the interaction between entrepreneurial ecology and innovation activities in key core technologies fields. This paper takes the entrepreneurial ecology in the optoelectronics industry chain as the research background, takes the hub enterprise Sike Holdings as the main case study object, explores the targeted governance of the entrepreneurial ecology by the hub enterprises, so as to promote the innovation activities in the key core technologies fields, and further analyzes the governance mechanism from the perspective of loose coupling. The research first finds that the construction process of entrepreneurial ecology mainly includes four stages: contact, binding, relaxation and strengthening, and the corresponding technological innovation process includes four stages: perception, perspective, array and penetration. Further, this paper explores the interaction between entrepreneurial ecology and innovation activities in key core technologies fields and the deep internal logic. On this basis, this paper further analyzes the mechanism of innovation cost reduction and innovation order improvement from the loose coupling theory. The research results of this paper provide an insight into how hub enterprises with different institutional logics balance marketability and planning in the ecology, which is helpful to further understanding the interactive relationship between entrepreneurship ecosystem governance and technological innovation in key core technologies fields, and promoting the sustainability of key core technologies innovation in practical work.

Key words: key core technologies, entrepreneurship ecosystem, loose coupling theory, case study