Cloud computing is a technology based on the Internet, providing services to the virtualized IT environment, and allowing users to use the services on their discretion. Cloud computing integrates multiple local computer systems, software, and platforms through networking and provides virtualized information services and IT resources to the users with great flexibility and scalability so it can meet practically any types of users' needs. In this paper, we propose a web-based system which supports and manages Korean National Health and Nutrition Examination Survey (KNHANES) -- the national plan -- using cloud computing environments.