This paper aims to explore how to use the online youth subculture to make package younger. On the basis of combing the concepts of brand rejuvenation, youth-orientedpackage and online youth subculture, combined with relevant theories and cases, the principles and strategies of promoting youth-oriented packaging by applying online youth subculture in package design are proposed. Youth-orientedpackage is an important means of brand rejuvenation, to maintain the brand's young image, change the old image of the brand, and prevent the brand image from ageing. Online youth subculture helps to promote package rejuvenation. The strategy of youth-orientedpackage is to explore the cultural function, communication function and social function of package. The package design driven by online youth subculture should follow the principles of matching, sociality, entertainment and innovation. After analysis of the internal and external situation of the brand, enterprises should constantly explore their own characteristics of youth-orientedpackage strategy, and continue to improve. Among them, step-by-step, brand alliance, new brand, package extension and brand community are common effective strategies for youth-orientedpackage.