The purpose of this study is to compare the effects of traditional media and the Internet (new media) on civic engagement. Four research questions and two hypotheses are posed. The research questions are: 1) Do conventional media and the new media differ in their influences on civic engagement? 2) Which types of Internet usage have an impact on civic engagement? 3) Does Internet self-efficacy play a moderating role in the relationship between Internet and social capital? Specifically, is it possible that users with high Internet self-efficacy are more likely to utilize the Internet for civic participation? 4) Does political self-efficacy play a moderating role in the relationship between Internet and social capital? Specifically, is it possible that people with high political self-efficacy are more likely to utilize the Internet for civic participation? The two corresponding hypotheses are: 1) Internet self-efficacy is positively related to online civic engagement. 2) Political self-efficacy is positively related to online and offline civic engagement. To answer the research questions and test the hypotheses, this study included a stratified random sampling of college students from ten universities in Guangzhou, the largest city in southern China. The sample size was 1017. The results of the data analysis show that conventional and new media exert different impacts on civic engagement. Reading newspapers and magazines significantly enhance online and offline civic engagement, while the effects of watching TV and listening to the radio are not significant. This implies that TV and broadcast might no longer serve as civic educators, while print media still plays an important role in fostering civic awareness and behaviors. Among the various types of Internet use, exchanging e-mails and using simple notification services (SNSs) have a significant positive impact on online and offline civic engagement. The effects of other types of Internet use are not significant. The implication of these findings is that the primary influence of the Internet on civic engagement is rooted in the functions of information dissemination, influencing public opinion, and organizing collective actions; that is, social Internet use could enhance civic engagement. However, the effect size of media (including conventional and new) is limited compared to the psychological antecedents of civic engagement. College students' political self-efficacy is a powerful predictor of civic engagement; their Internet self-efficacy is positively related to online engagement. The moderating effects of political and Internet efficacies on the relationship between Internet use and civic engagement are not significant, which suggests that the civic impact of the Internet does not depend on people's political efficacies and Internet skills.