This study was conducted to analyze the correlation between the satisfaction of club activity and mental health in undergraduate students. Voluntary participation, and confidentiality were explained to each of the subjects who were students in B universities located in Chungnam Province who agreed to participate in this study. The data was collected from 220 undergraduate students by structural questionnaire. Data were analyzed using SPSS 18.0. The results show that the average score for the satisfaction of club activity in undergraduate students was 2.77 out of 4, and the average score for the mental health in undergraduate students was 3.08 out of 5. There was significant differences in the satisfaction of club activity among the grade (F=3.090, p=.030), the major (F=3.013, p=.021) and the pocket money (F=3.531, p=.009), and in the mental health among health status (F=8.015, p<.001). And there was a positive correlation between the satisfaction of club activity and mental health (r=.282, p=.002). Therefore, it is necessary to identify the factors that improved satisfaction of club activity in college students in order to improve their mental health.