Objective : The purpose of this study is to examine the importance of nutritional health of the elderly in an accelerated aging society, study how nutritional health affects mental health and injury experiences related to improving the quality of life of the elderly, and provide data derived through analysis as basic data for the development of rehabilitation policies and intervention programs. Methods : A survey was conducted on 160 elderly people without chronic diseases who visited five community welfare centers for two months from July to August 2025. Independent sample t-test and one-way ANOVA were conducted for the mental health status of the elderly according to general characteristics, one-way ANOVA was conducted for the mental health status according to the nutritional health group of the elderly, and regression analysis was conducted on the effect of nutritional health of the elderly on mental health and injury experiences. Results : As a result of comparing the mental health of the elderly according to demographic characteristics, first, there were significant differences in mental health at age (p=.000) and economic level (p=.000). Second, there was a significant difference in mental health according to the elderly's nutritional health level. Third, it was found that the effect of nutritional health of the elderly on mental health and injury experiences had a significant effect. Conclusion : The nutritional health of the elderly has a very important influence on mental health and injury experiences. Mental health problems and injury caused by nutritional health problems are not just personal health, but also have a great social and economic impact. Therefore, finding ways to prevent and solve this will not only improve the quality of life of the elderly, but also increase the efficiency of the health care system of the whole society.