The purpose of this study is to discuss the challenges of welfare in the era of the Fourth Industrial Revolution by identifying the major problems that have emerged during the development of social welfare. The welfare system has been shaped, developed and changed in order to help us cope with new dangers. The main task of social welfare in the future will be to find solutions to new social problems that have emerged in the post-industrial society and are likely to be deepened through the Fourth Industrial Revolution. The welfare system in Korea is faced with the overlapping tasks of solving all of the problems such as income security, absence of care, labor market polarization and employment instability. Innovations in social welfare services that are combined with advanced technologies are also a challenge. And the most important task for the welfare system is to keep the basic idea of welfare, and that is, to support the future intelligence information society so that it can develop into a people-centered society.