Environmental problems emerged as common global problems awaiting solution. Active collaborative efforts are required of nations and communities in order to solve environmental problems effectively. International collaboration occurs much more commonly these days than before, and European Community(EC) mumber countries are no exceptions. EC has established and executed the five-year programs on Environmental Policy Implementation, which explicated basic principles for environmental policy development, since 1973. EC programs tend to emphasize that the direction of the policies should reflect a change from a remedial approach to a preventive approach. Those programs have brought an awareness of the importance of Environmental Impact Assessment(EIA) to EC member countries. France installed an EIA system in 1976, which was the first among member countries. Several other member countries also established a system. EC decided that a common guideline was necessary, and therefore formulated the "European Community Guideline for Environmental Impact Assessment" in 1985. All member countries were required to legislate an EIA system within three years, according to the Guideline. This study will conduct a comparative analysis of the current EIA systems of different EC member countries. The findings of this study will provide helpful information on how to improve the efficacy of the Korean system.