Based on the reviewing the impact of Internet on the people’s political participation, this paper conducted an online survey of college students in China (N=1471) and examined whether social media affected young adults’ political participation and what role Internet censorship plays in the process of political participation facilitated by social media. The results show that social media promotes young adults’ online as well as offline political participation, which different with the negative effects of the Internet. And Internet regulation had a negative effect on youth’s online as well as of?ine political participation. Governmental regulation not weaken the positive impact which social media on youth’ online political participation among them, but moderated the positive impact which social media on young people’s of?ine political participation.