中文摘要：

作为一种新兴的社会媒体形式,微博集博客、媒体、即时通讯功能于一身,兼具平台多样、传播迅速、交互性强等特点,在舆论传播方面发挥了重要作用。文中介绍了微博的基本概念,系统概括了微博数据获取的主流方法,总结了微博数据获取条件的选择方法和微博数据的表达方法,并讨论了数据获取中的瓶颈问题,给出了该领域中尚需解决的关键问题以及未来的发展方向。

英文摘要：

As a new social media,microblog played a very important role in the information distribution and public opinion propagation,with its multiple platforms usage,rapid propagation and strong interaction. Basic concept of microblog was introduced firstly. Secondly,several commonly used techniques on information retrieval,acquisition conditions selection,and data expression methods in microblog were surveyed and classified. Thirdly,we discussed some choke points. At last,based on the analyzed problems,suggestions for future research works were put forward.