Submarine optical cable network is the key connectivity infrastructure in the post-Fordism production system, which is related to international telecommunications, social economic activities, and national defense and security. Human-economic geography research of submarine optical cable network is cutting-edge and much needed, and is of great significance to the disciplinary development and national policy formulation. Based on a literature review, multidisciplinary knowledge of submarine optical cable network is integrated and systematically discussed in this article. The conclusions are as follows: 1) Existing research on submarine optical cable network is relatively few, but such research activities have significantly increased in recent years. The research content is mainly focused on its own facility attributes and gradually spreads to the social and economic sectors that it is associated with. Further discussion based on human-economic geography will become an important direction for future research. 2) Submarine optical cable network research is a new field of humaneconomic geography, which can be developed from the multidimensional perspectives of transportation geography, infrastructure geography, information and communication geography, and cyberspace geography, thereby enriching and improving the disciplinary system of human-economic geography in the new era. 3) In the future, the research on the human-economic geography of submarine optical cable network should focus on global connectivity oriented geographic research, space-time interaction mechanism of regional development, new narratives of geopolitical issues, and space of flow and world urban network.