As the digital economy advances, the breakthrough of key core technologies in the new generation of information and communication technology (ICT) has attracted increasing attention. Research on corporate dominant logics provides a fresh perspective for analyzing the breakthroughs in key core ICT technologies. Through a longitudinal case study of Huawei's breakthrough in 5G technology, the dominant logics followed by enterprises in the process of achieving breakthroughs in key core ICT technologies was summarized. It illustrated the differential impact of dominant logics at different stages on a company’s breakthrough in key core ICT technologies. Finally,the role of corporate dominant logics in driving breakthroughs in key core ICT technologies was distilled and an evolutionary process model was outlined.