This study examined the relationships among stress, childhood traumatic experience, ego-resilience, and life satisfaction of university students to explore the moderating effects of ego-resilience on those variables. The survey participants were 459 university students in Gyeonggi province. The collected data were analyzed using frequency, Pearson correlation coefficient, stepwise multiple regression, and moderated multiple regression by SPSS. The results were as follows. Stress, childhood traumatic experience and ego resilience had correlations with the life satisfaction. Ego resilience and stress were significant effective variables on the life satisfaction. Moderated multiple regression analysis also showed that a positive future orientation, which is a sub factor of ego-resilience, influenced the stress level. Based on these findings, it is important to lower the stress levels to increase the students' life satisfaction level. To do so, a strategy to enhance the positive future orientation is recommended.