[Objective] The paper aims to help the government administrate online public opinion and social media profiles more effectively. [Methods] First, we retrieved data on the topic of “Draw up the Lifeline” from Sina Weibo. Then, we used centrality, cluster and K-core indicators to analyze the network structure and dissemination patterns of public opinion with new media. [Results] We found that online public opinion is disseminated through a scale-free network, and all communities had similar structures. The core network was relatively close but widely distributed, and the mobile technology played some major roles. [Limitations] The collected data was not comprehensive and the inactive users were not removed, which might generate some biased results. [Conclusions] This paper provides some new perspectives to research on social welfare movements. It also lists some practical guides to regulate online public opinion.
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