Purpose: This study aimed to identify the relationship among emotional happiness, spiritual need, and healthy aging and to identify the factors affecting healthy aging in middle-aged and elderly population. Method: The participants were 100 middle-aged and elderly individuals. Data were collected using self-report questionnaires from March 9 to May 27, 2020. Collected data were analyzed using the SPSS/WIN 26.0 program. Results: There was a positive correlation between healthy aging and emotional happiness (r=.70, p<.001) and spiritual need (r=.52, p<.001). The factors influencing healthy aging were gender (β=.13, p=.026), subjective health status (β=.19, p=.002), emotional happiness (β=.60, p<.001), and spiritual need (β=.34, p<.001). These variables explained 67% of healthy aging. Conclusion: Healthy aging had a significant impact on women than on men when subjective health status was good and when emotional happiness and spiritual need were high. Healthy aging of the middle-aged and elderly population has confirmed the importance of physical, emotional, and spiritual health. Therefore, development and operation of programs that include various aspects of physical, emotional, and spiritual for healthy aging should be considered to confirm their effectiveness.