This study aims to analyze the relationships among the types of life stress, smart mobile phone addiction, and life satisfaction of university students in Taiwan. The subjects were 332 university students in northern Taiwan, including 64.8% males and 35.2% females. The research tools were the scale of university students' daily life stress, scale of smart mobile phone addiction, and scale of university students' life satisfaction. The data were analyzed with descriptive statistics, product-moment correlation analysis, and multiple regression analysis. The results suggested that (1) university students' love-affair stress and academic stress positively influence smart mobile phone addiction; (2) their stress of interpersonal relationship, stress of self-career, family life stress, and time management and issues significantly influence their life satisfaction. Finally, based on the findings, suggestions are proposed for teachers, university students, and future research.