Abstract: In the Internet era, the expression and dissemination of language is deeply influenced by the Internet. Internet catchphrases are dramatically becoming popular online, which represents the sympathy of common values, the resonance of interlinked emotion, the share of similar views, and the enjoyment of congenial tastes. This phenomenon shows the value tendencies of Internet users, and has an impact on cultivating the values of young people, in particular, college students. Scholars have different ideas on this issue, and hold both positive and negative viewpoints. What is more, most of the studies are qualitative analysis, which lacks the quantitative analysis such as empirical studies. This study explores the impact of Internet catchphrases on cultivating the college students' socialist core value. The results showed that Internet catchphrases have direct and positive impacts on cultivating the college students' socialist core value. Besides, Internet catchphrases strongly mediate the relationship between online degree and the socialist core value. This study contributes to previous studies, and can be used as a reference for further research on the socialist core value and its education.