Abstract: The unique and in-depth professional technology accumulated by enterprises in specific knowledge fields for a long time is the key driving force to promote the breakthrough of key core technologies. This study takes the new generation of information technology industry in the first five batches of listed small giant enterprises in China as the research object, and deeply explores the effect and internal mechanism of technological specialization on the breakthrough of key core technologies. The results show that there is an inverted U-shaped relationship between technology specialization, knowledge search and key core technology breakthroughs. The inverted "U" shaped relationship between technology specialization and key core technology breakthroughs is mediated by knowledge search. Knowledge integration ability moderates the role of technology specialization and knowledge search on key core technology breakthroughs, respectively. High knowledge integration ability will alleviate the negative impact of over-specialization and over-search, and when it breaks through a certain threshold, it can completely offset the negative impact and further promote key core technology breakthroughs. This study emphasizes the complementary synergy between knowledge search and technology specialization, expands the research scope of key core technology breakthroughs at the micro level, and provides theoretical guidance and decision-making reference for enterprises to promote key core technology breakthroughs.

摘要： 企业在特定知识领域内长期积累形成的独特而深入的专业化技术，是推动关键核心技术突破的关键驱动力。本研究以我国前五批上市的专精特新小巨人企业中新一代信息技术产业为研究对象，深入探索技术专业化对关键核心技术突破的作用效应以及内在机制。研究发现，技术专业化、知识搜索分别与关键核心技术突破呈倒U型关系；知识搜索中介了技术专业化与关键核心技术突破的倒U型关系受；知识整合能力分别调节技术专业化和知识搜索对关键核心技术突破的作用，高知识整合能力会缓解过度专业化以及过度搜索带来的负面影响，且当其突破某门槛时，可完全抵消负面影响，进一步推动关键核心技术突破。本研究强调了知识搜索与技术专业化之间的互补协同作用，拓展了微观层面关键核心技术突破的研究范畴，同时也为企业推动关键核心技术突破提供了理论指导和决策参考。