World Health Organization declared COVID-19 as a pandemic after the breakout in the city of Wuhan, China. The disease has a lot of negative influences on the global economy and people’s daily life. Most of the countries around the world have locked down, implemented travel restrictions and released some social distancing measures. In the present situation, Information and Communications Technology are playing a significant role in bonding and connecting people. Because of the worldwide epidemic, majority of the education organizations and enterprises have put online platformsto use, students and staff are studing and working at home.  In the four months after the outbreak, the Chinese government adopted the most advanced technology and carried out strict surveillance in all cities, so that the spread of the epidemic was well controlled. In the era of big data, the rapid development of digital society will be an inevitable trend. In this circumstance, the national system, social management and personal lifestyle are undergoing drastic changes. Although large-scale application of information technology and network participation help to enhance resilience of prevention and control transmission of disease, censorship and human control by technology also bring resistance to epidemic prevention and control to a certain extent. This study will discuss the privacy issues exposed by the large-scale application of big data in epidemic prevention and the huge impact of the network on traditional personal life.