Abstract: With the development of financial informationization and the continuous expansion of data scale, data management has become a common problem faced by the financial industry, in which information transmission is the most vulnerable and difficult to prevent. With the continuous innovation of network attack means and the rapid improvement of computing power, the security risks of classical wired and wireless transmission have increased. Quantum secure communication has developed rapidly in recent years, and it is also a strictly proven secure transmission mode, which has a wide range of applications in the financial industry. Based on this, this paper analyzes the concept, principle and application status of quantum secure communication, it’s believed that stability, high-speed, long-distance, quantum relay and storage technology, and the application integration with finance are the short-term and medium-term breakthroughs in the application of quantum secure communication technology in the financial industry. Finally, it puts forward suggestions on realizing large-scale application in the financial industry from the perspectives of overcoming technical difficulties, participating in projects and building wide-area networks.

Key words: Big Data Finance, Quantum Secure Communication, Information Transmission, Network Attack, Information Security