Purpose: This is a descriptive research to examine the levels of ADL, self efficacy, and life satisfaction of elderly institution residents, and the relations among the factors. Method: Data were collected through a questionnaire survey of elders aged over 65 at nursing homes in 9 areas throughout the country. Measures were the physical function scale, the general self efficacy scale, and LSI Z. Collected data were analyzed using SAS/PC11.0. Result: First, the mean levels of ADL, self efficacy, and life satisfaction were 2.83 (0.85), 2.79 (0.63), and 1.18 (0.42). Second, the relations among three factors were showed positive correlations. Third, (1) The level of ADL was statistically significantly different according to health condition, religious activity, volunteer activity, and friend meeting. (2) The level of self efficacy was statistically significantly different according to health condition, source of help, religious activity, volunteer activity, friend meeting, and elderly school & senior center. (3) The level of life satisfaction was statistically significantly different according to health condition, source of help, religious activity, volunteer activity, friend meeting, and elderly school & senior center. Conclusion: Conclusively, it is required to enhance ADL and self-efficacy in order to improve elderly institution residents’ life satisfaction.