Abstract: This paper，starting with the definition and characteristics of Internet culture，analyzes the impact of network culture on campus culture security which challenges the mainstream ideology and traditional culture as a tool of Western cultural invasion.To consolidate the socialist ideology and mainstream value system，to maintain campus safety，and to guide students in their cultural consumption and enhance their cultural consciousness，we should take the following measures:enhancing China′s traditional culture in the network field in both rate and depth，consolidating the campus culture safety “firewall”.

Key words: network culture, campus culture, cultural security, mainstream ideology, cultural consumption orientation