In this paper, by studying the characteristics of smart classrooms, the algorithm uses data technology to efficiently screen out the information that users are interested in. This change promotes the automation and intelligent upgrade of journalism. The problem of personalized information consumption brought about by Web3.0 makes it impossible for users to break through the barriers of "information cocoon room". Based on the "Statistics" course, the application and research of the online teaching mode of smart classroom is carried out, using "random questions" "" Smart teaching methods such as "Barrage Discussion" and "Intelligent Analysis", as well as before the class. The diluting of the leading function of mainstream media and the current governance dilemma have brought multiple challenges to ideological security work. It is proposed to attach importance to front-end management of algorithms and strengthen the chain of negative information. coping strategies.