Led by the progress of AI technology，Korea media is showing a continuous outbreak trend，and its content production mode and communication form are undergoing fundamental changes. Korea smart media is getting ready for development. This paper first discusses the strategic direction of the Korea government to develop AI from the perspective of industrial development background and policy support. Secondly，from the perspective of media application of artificial intelligence technology，this paper explores the current development status of smart media in Korea and the application status of AI anchors，AI platforms and other practical cases. Finally，it is proposed that smart media in Korea will actively build an industrial ecosystem of artificial intelligence + media in the future to promote a new round of innovation in media innovation. 5G will usher in an era centered on realistic content and real-time interactive content，which will continuously increase the value of user experience. AR and VR will become the killer content in 5G era.

But at the same time，it is also necessary to watch out for new security threats arising from the continuous evolution of 5G technology. The guiding application of new security technologies such as block-chain technology and quantum cryptography can be considered to strengthen the information security protection of 5G network.