微博的便捷性、互动性和自由性等传播特性在赢得用户青睐的同时，也契合了谣言传播的传播需求，为谣言的产生和扩散提供了极大便利。因此，微博自诞生之日起便附带着谣言一起呈现。微博首先因其传播特性为谣言降低了生产成本、加快了传播速度、增大了辨识难度；其次，微博对传统大众传播理论的变异为谣言现象的产生提供了理论解释；此外，微博在技术层面对谣言现象难以实现全面控制。本文以新浪微博为例，结合具体事例分析了微博谣言类型和其传播模式，总结了微博现有的辟谣系统及相关措施，并提出从微博自我净化功能出发，理性看待微博谣言现象。

Microblog is a kind of newest Internet information dissemination platform. Today, the convenience, openness, freedom, interaction of the Microblog had gained more and more people’s use and gratification. As a kind of the media with the common and roots person character, a large number of people involved it. Rumors come into being on Microblog because of the Microblog communication mechanism which correspond to its spreading requirements suitably. Firstly, Microblog reduce the cost of production of rumors, accelerate the spread speed of rumors, and increase the difficulty of distinguishing rumors and real news. Secondly, the gatekeeper theory of communication on Microblog has a variation which explained rumors appearance in depth. Moreover, to control rumors has technology challenges as a result of the technology improvement of Micro blog.This article set Sina Weibo as an analysis example, analyzed the rumors types on Microblog and their communication mechanism, summarized the existing solution of the rumors on Micro blog, and proposed the reasonable proposals on how to treat rumors on Micro blog.