Abstract: Network security of ideology involves different levels.It is generally divided into three levels from the inside,including independence of cultural sovereignty,consolidation of network position,and completeness of information frontier.With the rapid development of information technology,they are confronted with challenges of different levels.Therefore,risk management of ideology shall be strengthened.On the premise of keeping cultural sovereignty,recognizing and making up cultural defects,the network influence of dominant ideology shall be improved.At the same time,faced with the changes in the way of network culture spreading and infiltration,we should expand the network position of the mainstream ideology.We should establish a national “firewall”,protecting information frontier,and setting up a multidimensional defense line.

Key words: cultural sovereignty, network position, information frontier, ideology security