谣言是一种普遍的社会现象。随着互联网的普及,网络传播主体的匿名性、造谣的低成本性、传谣的便捷性助长了谣言的蔓延,扩散了谣言的影响力。本文以新浪微博“3D《泰坦尼克号》伸手摸”段子为例,对微博谣言孕育、变异、扩散及消解四个传播路径进行分析,进而得出传播成因包括信息自身、草根传者、受众个体、商业媒体等,最后对微博在谣言传播中双重角色的悖论进行深刻反思。 Rumors are a common social phenomenon. With the popularization of the Internet, the anonymity of the main body of Internet transmission, the low cost of rumor, and the convenience of rumors, it has encouraged the spread of rumors and spread the influence of rumors. This paper analyzes the four propagation routes of the microblogging rumor, such as sowing, mutation, spreading and digestion of Sina Weibo, “3D” Titanic “reaching out and touching,” and then concludes that the causes of dissemination include information itself and grassroots Audiences, commercial media, etc. Finally, we deeply reflect on the paradox of Weibo’s dual role in the spread of rumors.