Along with the rapid development of computer technology and data analysis technology, big data as da-ta resources and information capital has a significant impact on the innovation of public administration. The mode of precise public administration springs up. The technology of big data has provided good opportunities for eleva-ting the level of scientific decision-making, capacity in service, customization, ability in the management of so-cial risks in public administration. Meanwhile, the age of big data poses such threats as lack of awareness of big data, information security, information silo, inadequate supply of talents. We should cultivate the mindset of big data, and establish a new mode of precise public administration featuring big-data-orientation, and the concert-ed efforts of enterprises, social organizations and ordinary people under the leadership of government.