With the progress of information technology and the increasingly close international relations，the competition among contemporary countries is not only military，political and economic competition，but also cultural and information competition. ROK is famous for its developed cultural industry and is quite radiative to East Asian countries. In recent decades，ROK’s cultural industry has rapidly and widely spread to China in the form of commodities along the global commodity circulation network，fueled by the Internet，resulting in the “Korean Wave” with its economic and cultural invasion to China. To some extent，the spread of ROK’s ideology constituted a potential threat to the security of China with its ideological control on the everyday life of Chinese people. In this regard，China needs to focus on the development of cultural products，cultural communication channels，cultural symbol system and network technology，and strive to grasp the ideological discourse and cultural leadership in international image publicity，network security governance and public opinion shaping，so as to form the ideological competitive advantage of the trinity of cultural goods，cultural symbols and information technology.