Abstract: In recent years, public crisis events are emerging one after another in China, which puts the crisis management of the government to a severe test. Opportunities and challenges on public crisis management co-exist for the Chinese government especially in this big data era. How to use big data effectively and efficiently to resolve crisis has become an urgent issue to tackle. The analysis based on big data not only makes it possible for the government to collect real-time information and cope with crisis promptly, but also plays an important role in processing the information and providing interim-based solutions.