• In recent years, the rapidly changing media landscape in China has shown that the revenue and market share of digital media have been expanding. Among all digital media, social media is still the most active and potential one. • With the fast growth of social media users in China, the penetration of social media has risen significantly, especially with the development of mobile devices. • However, more users believed that social media has worsened their living quality. Social media has made people spend less time in reading printed content, and do have information security risks. It’s kind of entertaining experiences at the cost of health. • Among social media platforms in China，WeChat and Sina Weibo have drawn the most attention. User retention for WeChat was rather high, as more than a quarter of users opened WeChat for over 30 times per day. However, Sina Weibo has more advantages in spreading speed and media influence.