Purpose: The purpose of this study was to find out the relationship between health concern, knowledge of cardio-cerebrovascular disease, and health-promoting behaviors among the elderly in the community. Method: The subjects of the study were 142 senior citizens aged 65 years or older in Cheongju-si, Chungcheong-do. Data were collected using structured questionnaires that included questions on the general characteristics, health concerns, knowledge of cardio-cerebrovascular disease, and health-promoting behaviors. The collected data were analyzed by the statistical program SPSS 20.0. The frequencies, percentages, averages, and standard deviations of the collected data were analyzed using a t-test, ANOVA, Mann Whitney U test, and Pearson's correlation coefficient, basing on the purpose of the study. The Scheffe test was carried out as a posteriori test. Result: The elderly were found to have a high health concern, but their knowledge of cardio-cerebrovascular disease was low, and their health-promoting behaviors were above the intermediate level. There was a significant positive correlation between each variable, which means that the higher the health concern was, the more knowledge an individual had of cardio-cerebrovascular disease, and the more health-promoting behaviors one had. Conclusion: This suggests that the elderly in the community should be encouraged to engage in the actions that promote their health by raising their level of health concern and awareness of diseases through health education, basing on their individual characteristics.