移动媒体时代,公民的权利在微博、微信等平台被行使得异常活跃,然而这种看似力量庞大的围观,在狂欢式的喧嚣过后却常常出现被遗忘的境况,舆论中心的公共事件不断替换,舆情呈现出从“围观”到“遗忘”的两级巨变。本文以天津爆炸事件为例,尝试探析舆情是如何从发酵到围观,进而演变到被公众遗忘的。 In the era of mobile media, the rights of citizens have been unusually active on platforms such as Weibo and WeChat. However, this seemingly powerful crowd often disappears after the carnival noise, and the public events in the media center continue Replacement, public opinion shows from the “crowd” to “forget” two levels of change. Taking Tianjin’s explosion as an example, this article attempts to probe into how public opinion has evolved from being fermented to onlookers to being forgotten by the public.