Purpose: The purpose of this study was to provide basic data for ego integrity enhancing programs, and to elevate the quality of life in elderly people by examining whether the ego integrity of elderly people was related to factors. Method: Subjects were 104 elderly people, from February 24 to March, 19, 2005. The data was analyzed using Pearson\'s correlation analysis, stepwise multiple regression and so on. Results: Gender, education, number of offspring, economic status and the amount of, the perception and the source of the discretionary spending money showed significant differences in ego-integrity levels of elderly people. The correlated factors of ego integrity included perceived well-being (r=.533, p=.000), social activity (r=.307, p=.002), self esteem (r=502, p=.000), powerlessness (r=-.629, p=.000), social support (r=.461, p=.000), and life satisfaction (r=.730, p=.000). The most powerful predictor of ego integrity was life satisfaction (55.7%). Altogether life satisfaction, powerlessness, number of offspring, social support, and age accounted for 67.3% of the ego integrity. Conclusions: The results showed that elderly people were influenced by factors of life satisfaction, powerlessness, social support and so on. This study suggests that life satisfaction. powerlessness, and social support should be considered in enhancing the ego integrity programs designed for elderly people.