In 2015, around 3,000 websites, including Google, Yahoo, Facebook, Youtube and Twitter were blocked in mainland China under the policy of Internet censorship. Quite a number of these websites are social media and instant messaging related. This motivates us to investigate about the relationship between online activities and offline activities. We are especially interested in whether online political participation do promote offline political participation. In this study, we examine the relationship between the login frequency to social media, online involvement of political participation and offline involvement of political participation of Facebook users. A total of 107 adult were invited in this study by completing survey. Typically, we believe that there is a close relationship between one's acts during offline period and his/her online behaviors. However, our results showed that there is no causal correlation between online duration of Facebook and offline involvement of political participation.