In recent years，some video contents present dominant culture become prevalent unexpectedly in BiliBili Danmaku video site.This study analyzed 8307 Danmaku texts from the video called“Zhang（a Chinese People's Liberation Army admiral）first live webcast in BiliBili Danmaku video site”and explored the relationship between youth subculture and dominant culture in the context of new media through semantic network analysis and text analysis.The results show the orthodox nominatum （admiral Zhang）is at the margin of semantic network and the subculture nominatun juzuo is at the center.Danmaku texts may not have distinct effect on the orthodox image of admiral Zhang，but it does resist the dominant through ritual；the resistance of youth subculture is weaken by Danmaku texts.Our findings show that the relationship between youth subculture and dominant culture is positive-they approve mutually and communicate with each other.