The purposes of this study is to examine adult learners' outcomes on the university lifelong education based on students background and university characteristics, and to explore the factors affecting the satisfaction, thereby deriving implications for improving the effectiveness of university lifelong education. To that end, we surveyed adult learners participating in the ‘Lifelong education at universities for the Future of Education(LiFE)’ project, and the data of 2,628 students who responded to all questionnaire were used for analysis. Utilizing MANOVA and multiple regression analysis, this study reveal the following results: First, according to the student characteristics, female learners showed higher satisfaction in all areas than male learners, but the remaining individual characteristics did not bring statistically significant differences in satisfaction. The university characteristics showed differences in satisfaction depending on types of lifelong education projects, region of university, and type of admission requirement. Second, the factors affecting adult leaners’ lifelong educational satisfaction, in terms of the individual characteristics, are gender, grade, academic major and age, which showed statistically significant influence. In general, the lower the grade, and the higher the age, the higher the overall satisfaction level of lifelong education, and the higher the satisfaction level of natural science and art and physical education compared to the humanities and social sciences. In the case of university characteristics, adult learners at universities in the non-Seoul metropolitan area generally perceive high satisfaction in lifelong education, although there are differences in sub-areas. Based on the results of this study, the practical and policy recommendations were suggested.