关键词: 引爆点, 新闻报道, 南都记者, 卧底替考

Abstract: Mainstream news release of omnimedia era is facing increasing challenges from We media and social media with non gatekeeper disseminating information， in media community the information overload and attention fragments, and the important information tending to be overwhelmed by garbage and bubble messages immediately. News media should control the reports scientifically and reasonably from planning to publishment, and spreading to find their own unique value of attracting public attention and create “the tipping point”, so that news media could lead public opinion correctly. "The Tipping Point" theory sums up three principles for the rise of the popular tide. The ideas of how to cause concern and lead the trend have some reference for news reports.

Key words: the tipping point, news reports, reporter of South Metropolis News, undercover for exam