The purpose of this paper is to explore the ways to increase the efficiency of Integrated Crisis & Emergency Management System in Korea. For attaining the research goal, this paper studied the ideological values, meanings of the Integrated Crisis & Emergency Management System, and researched the Comprehensive Emergency Management Model. And then, this research reviewed the Integrated Emergency Management System. Major alternatives for increasing the efficiency are as follows. First, the paradigms of crisis & emergency management in Korea should be changed to support, cooperation, coordination, liaison from direction, control, order, supervision. Second, we need to establish the roles of network hub of the Integrated Crisis & Emergency Management System. Third, it is necessary that the Integrated Crisis & Emergency Management System is equipped with information system in ubiquitous society. Fourth, international cooperation and linkage should be systemized. Fifth, we should improve the national resources mobilization system for the crisis & emergency situation. Sixth, the government has to establish a pan-national crisis & emergency management governance system including civil society, enterprise, etc. Seventh, we have to exercise the practical crisis & emergency management drill. Finally, the Integrated Crisis & Emergency Management System should be based on the field-oriented situation related with local governments.