Abstract: With the rapid development of information technology, big data has become an important management resource. The idea of quantitative management becomes increasingly popular among the various sectors in the global economic and social activities. More and more organizations decisions are made based on the data analysis, and more and more industries are experiencing a wave of revolutionary impact caused by big data, as well as public service. Introducing means and methods of big data into the public service is an effective way to realize the modernization of public services, and it is also the inevitable requirement for big data.