The government has been relying on the all sorts of media to promote the public policy, or using integrated marketing to improve the results of communication. However, the media revolution driven by the Web 2.0 Information and Communication Technology has changed numerous traditional marketing strategies in terms of promoting public policy. In the e-Democracy era, not only can the party in favor of the policy use media to promote, the party against the policy is also able to intensity the conflict and force the government to shift ground. This study takes examples of Taiwanese government's failure in promoting Cross-Strait Service Trade Agreement (CSSTA) in 2014, analyzes the practice of new media in the Anti-CSSTA Sunflower Movement, and compares the media utilization, agenda setting, and policy discourse in both sides. It is found in this study that the combination of social media and people's resentment against the government has achieved a rudimentary result. The diverse media tools that the opposite side uses, its flexibility, and the ability to mobilize are what government lacks with regard to marketing public policy. Similar challenges will definitely arise in the future when the government promote public policy. It is suggested that the government should create a new strategy to promote the public policy with better flexibility.