Proper nutrition is important to improve the health and quality of life of elderly people. However, in general, there is no reason for elderly people to have no appetite, or the willingness to eat is reduced and the lack of nutrition. There was lack of research on correlation food security, depression and quality of life, for improving the health of the elderly and improving the quality of life. However, elder people are more likely to suffer from malnutrition due to poor appetite. This study was based on 1,202 subjects aged 65 years or more who participated in sixth Korea National Health and Nutrition Examination Survey, 2013-2014. Variables was analyzed by general characteristics, food security, depression and quality of life. Data analysis was using SPSS WIN 21.0 program. The results of this study, food security was correlated positvely with depression and negativly with quality of life, depression was correlated negativly with quality of life. The results of this study, food security should be considered to improve the depression and quality of life of the elderly.