For hundreds of thousands of internet users，they confront a variety of network catchwords during their daily lives. It is exactly these catchwords that not only enrich everyday language，but also promote the dissemination of hotspot events，meanwhile it provides an opportunity for ordinary people to gather wisdom and compete for rights of voice. This article will take those network public events that occurred between 2008 and 2012 and which had great impact on our society，as examples to probe into the way ordinary internet users make use of a special tip under the environment of new media when they “contend with” dominant discourses—network catchwords. Besides，we can try to understand the deliberative politics practices function of network catchwords and its lessons for the development of civil culture and the construction of public sphere through case analysis.